20727840

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:255

約数の個数: 192

約数和(自身を含む): 77414400

約数和(自身を除く): 56686560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 96, 105, 112, 120, 124, 140, 155, 160, 168, 186, 199, 210, 217, 224, 240, 248, 280, 310, 336, 372, 398, 420, 434, 465, 480, 496, 560, 597, 620, 651, 672, 744, 796, 840, 868, 930, 992, 995, 1085, 1120, 1194, 1240, 1302, 1393, 1488, 1592, 1680, 1736, 1860, 1990, 2170, 2388, 2480, 2604, 2786, 2976, 2985, 3184, 3255, 3360, 3472, 3720, 3980, 4179, 4340, 4776, 4960, 5208, 5572, 5970, 6169, 6368, 6510, 6944, 6965, 7440, 7960, 8358, 8680, 9552, 10416, 11144, 11940, 12338, 13020, 13930, 14880, 15920, 16716, 17360, 18507, 19104, 20832, 20895, 22288, 23880, 24676, 26040, 27860, 30845, 31840, 33432, 34720, 37014, 41790, 43183, 44576, 47760, 49352, 52080, 55720, 61690, 66864, 74028, 83580, 86366, 92535, 95520, 98704, 104160, 111440, 123380, 129549, 133728, 148056, 167160, 172732, 185070, 197408, 215915, 222880, 246760, 259098, 296112, 334320, 345464, 370140, 431830, 493520, 518196, 592224, 647745, 668640, 690928, 740280, 863660, 987040, 1036392, 1295490, 1381856, 1480560, 1727320, 2072784, 2590980, 2961120, 3454640, 4145568, 5181960, 6909280, 10363920, 20727840]

約数ペア:

[(1, 20727840), (2, 10363920), (3, 6909280), (4, 5181960), (5, 4145568), (6, 3454640), (7, 2961120), (8, 2590980), (10, 2072784), (12, 1727320), (14, 1480560), (15, 1381856), (16, 1295490), (20, 1036392), (21, 987040), (24, 863660), (28, 740280), (30, 690928), (31, 668640), (32, 647745), (35, 592224), (40, 518196), (42, 493520), (48, 431830), (56, 370140), (60, 345464), (62, 334320), (70, 296112), (80, 259098), (84, 246760), (93, 222880), (96, 215915), (105, 197408), (112, 185070), (120, 172732), (124, 167160), (140, 148056), (155, 133728), (160, 129549), (168, 123380), (186, 111440), (199, 104160), (210, 98704), (217, 95520), (224, 92535), (240, 86366), (248, 83580), (280, 74028), (310, 66864), (336, 61690), (372, 55720), (398, 52080), (420, 49352), (434, 47760), (465, 44576), (480, 43183), (496, 41790), (560, 37014), (597, 34720), (620, 33432), (651, 31840), (672, 30845), (744, 27860), (796, 26040), (840, 24676), (868, 23880), (930, 22288), (992, 20895), (995, 20832), (1085, 19104), (1120, 18507), (1194, 17360), (1240, 16716), (1302, 15920), (1393, 14880), (1488, 13930), (1592, 13020), (1680, 12338), (1736, 11940), (1860, 11144), (1990, 10416), (2170, 9552), (2388, 8680), (2480, 8358), (2604, 7960), (2786, 7440), (2976, 6965), (2985, 6944), (3184, 6510), (3255, 6368), (3360, 6169), (3472, 5970), (3720, 5572), (3980, 5208), (4179, 4960), (4340, 4776)]