21119280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{967}}^1$

素因数の和:1003

約数の個数: 160

約数和(自身を含む): 80661504

約数和(自身を除く): 59542224

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, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 967, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 1934, 2184, 2730, 2901, 3120, 3640, 3868, 4368, 4835, 5460, 5802, 6769, 7280, 7736, 9670, 10920, 11604, 12571, 13538, 14505, 15472, 19340, 20307, 21840, 23208, 25142, 27076, 29010, 33845, 37713, 38680, 40614, 46416, 50284, 54152, 58020, 62855, 67690, 75426, 77360, 81228, 87997, 100568, 101535, 108304, 116040, 125710, 135380, 150852, 162456, 175994, 188565, 201136, 203070, 232080, 251420, 263991, 270760, 301704, 324912, 351988, 377130, 406140, 439985, 502840, 527982, 541520, 603408, 703976, 754260, 812280, 879970, 1005680, 1055964, 1319955, 1407952, 1508520, 1624560, 1759940, 2111928, 2639910, 3017040, 3519880, 4223856, 5279820, 7039760, 10559640, 21119280]

約数ペア:

[(1, 21119280), (2, 10559640), (3, 7039760), (4, 5279820), (5, 4223856), (6, 3519880), (7, 3017040), (8, 2639910), (10, 2111928), (12, 1759940), (13, 1624560), (14, 1508520), (15, 1407952), (16, 1319955), (20, 1055964), (21, 1005680), (24, 879970), (26, 812280), (28, 754260), (30, 703976), (35, 603408), (39, 541520), (40, 527982), (42, 502840), (48, 439985), (52, 406140), (56, 377130), (60, 351988), (65, 324912), (70, 301704), (78, 270760), (80, 263991), (84, 251420), (91, 232080), (104, 203070), (105, 201136), (112, 188565), (120, 175994), (130, 162456), (140, 150852), (156, 135380), (168, 125710), (182, 116040), (195, 108304), (208, 101535), (210, 100568), (240, 87997), (260, 81228), (273, 77360), (280, 75426), (312, 67690), (336, 62855), (364, 58020), (390, 54152), (420, 50284), (455, 46416), (520, 40614), (546, 38680), (560, 37713), (624, 33845), (728, 29010), (780, 27076), (840, 25142), (910, 23208), (967, 21840), (1040, 20307), (1092, 19340), (1365, 15472), (1456, 14505), (1560, 13538), (1680, 12571), (1820, 11604), (1934, 10920), (2184, 9670), (2730, 7736), (2901, 7280), (3120, 6769), (3640, 5802), (3868, 5460), (4368, 4835)]