2478840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 9192960

約数和(自身を除く): 6714120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 227, 260, 273, 280, 312, 364, 390, 420, 454, 455, 520, 546, 681, 728, 780, 840, 908, 910, 1092, 1135, 1362, 1365, 1560, 1589, 1816, 1820, 2184, 2270, 2724, 2730, 2951, 3178, 3405, 3640, 4540, 4767, 5448, 5460, 5902, 6356, 6810, 7945, 8853, 9080, 9534, 10920, 11804, 12712, 13620, 14755, 15890, 17706, 19068, 20657, 23608, 23835, 27240, 29510, 31780, 35412, 38136, 41314, 44265, 47670, 59020, 61971, 63560, 70824, 82628, 88530, 95340, 103285, 118040, 123942, 165256, 177060, 190680, 206570, 247884, 309855, 354120, 413140, 495768, 619710, 826280, 1239420, 2478840]

約数ペア:

[(1, 2478840), (2, 1239420), (3, 826280), (4, 619710), (5, 495768), (6, 413140), (7, 354120), (8, 309855), (10, 247884), (12, 206570), (13, 190680), (14, 177060), (15, 165256), (20, 123942), (21, 118040), (24, 103285), (26, 95340), (28, 88530), (30, 82628), (35, 70824), (39, 63560), (40, 61971), (42, 59020), (52, 47670), (56, 44265), (60, 41314), (65, 38136), (70, 35412), (78, 31780), (84, 29510), (91, 27240), (104, 23835), (105, 23608), (120, 20657), (130, 19068), (140, 17706), (156, 15890), (168, 14755), (182, 13620), (195, 12712), (210, 11804), (227, 10920), (260, 9534), (273, 9080), (280, 8853), (312, 7945), (364, 6810), (390, 6356), (420, 5902), (454, 5460), (455, 5448), (520, 4767), (546, 4540), (681, 3640), (728, 3405), (780, 3178), (840, 2951), (908, 2730), (910, 2724), (1092, 2270), (1135, 2184), (1362, 1820), (1365, 1816), (1560, 1589)]