20726160

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1$

素因数の和:122

約数の個数: 240

約数和(自身を含む): 80601984

約数和(自身を除く): 59875824

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 73, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 146, 156, 168, 169, 182, 195, 208, 210, 219, 240, 260, 273, 280, 292, 312, 336, 338, 364, 365, 390, 420, 438, 455, 507, 511, 520, 546, 560, 584, 624, 676, 728, 730, 780, 840, 845, 876, 910, 949, 1014, 1022, 1040, 1092, 1095, 1168, 1183, 1352, 1365, 1456, 1460, 1533, 1560, 1680, 1690, 1752, 1820, 1898, 2028, 2044, 2184, 2190, 2366, 2535, 2555, 2704, 2730, 2847, 2920, 3066, 3120, 3380, 3504, 3549, 3640, 3796, 4056, 4088, 4368, 4380, 4732, 4745, 5070, 5110, 5460, 5694, 5840, 5915, 6132, 6643, 6760, 7098, 7280, 7592, 7665, 8112, 8176, 8760, 9464, 9490, 10140, 10220, 10920, 11388, 11830, 12264, 12337, 13286, 13520, 14196, 14235, 15184, 15330, 17520, 17745, 18928, 18980, 19929, 20280, 20440, 21840, 22776, 23660, 24528, 24674, 26572, 28392, 28470, 30660, 33215, 35490, 37011, 37960, 39858, 40560, 40880, 45552, 47320, 49348, 53144, 56784, 56940, 61320, 61685, 66430, 70980, 74022, 75920, 79716, 86359, 94640, 98696, 99645, 106288, 113880, 122640, 123370, 132860, 141960, 148044, 159432, 172718, 185055, 197392, 199290, 227760, 246740, 259077, 265720, 283920, 296088, 318864, 345436, 370110, 398580, 431795, 493480, 518154, 531440, 592176, 690872, 740220, 797160, 863590, 986960, 1036308, 1295385, 1381744, 1480440, 1594320, 1727180, 2072616, 2590770, 2960880, 3454360, 4145232, 5181540, 6908720, 10363080, 20726160]

約数ペア:

[(1, 20726160), (2, 10363080), (3, 6908720), (4, 5181540), (5, 4145232), (6, 3454360), (7, 2960880), (8, 2590770), (10, 2072616), (12, 1727180), (13, 1594320), (14, 1480440), (15, 1381744), (16, 1295385), (20, 1036308), (21, 986960), (24, 863590), (26, 797160), (28, 740220), (30, 690872), (35, 592176), (39, 531440), (40, 518154), (42, 493480), (48, 431795), (52, 398580), (56, 370110), (60, 345436), (65, 318864), (70, 296088), (73, 283920), (78, 265720), (80, 259077), (84, 246740), (91, 227760), (104, 199290), (105, 197392), (112, 185055), (120, 172718), (130, 159432), (140, 148044), (146, 141960), (156, 132860), (168, 123370), (169, 122640), (182, 113880), (195, 106288), (208, 99645), (210, 98696), (219, 94640), (240, 86359), (260, 79716), (273, 75920), (280, 74022), (292, 70980), (312, 66430), (336, 61685), (338, 61320), (364, 56940), (365, 56784), (390, 53144), (420, 49348), (438, 47320), (455, 45552), (507, 40880), (511, 40560), (520, 39858), (546, 37960), (560, 37011), (584, 35490), (624, 33215), (676, 30660), (728, 28470), (730, 28392), (780, 26572), (840, 24674), (845, 24528), (876, 23660), (910, 22776), (949, 21840), (1014, 20440), (1022, 20280), (1040, 19929), (1092, 18980), (1095, 18928), (1168, 17745), (1183, 17520), (1352, 15330), (1365, 15184), (1456, 14235), (1460, 14196), (1533, 13520), (1560, 13286), (1680, 12337), (1690, 12264), (1752, 11830), (1820, 11388), (1898, 10920), (2028, 10220), (2044, 10140), (2184, 9490), (2190, 9464), (2366, 8760), (2535, 8176), (2555, 8112), (2704, 7665), (2730, 7592), (2847, 7280), (2920, 7098), (3066, 6760), (3120, 6643), (3380, 6132), (3504, 5915), (3549, 5840), (3640, 5694), (3796, 5460), (4056, 5110), (4088, 5070), (4368, 4745), (4380, 4732)]