21300240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6827}}^1$

素因数の和:6856

約数の個数: 80

約数和(自身を含む): 71120448

約数和(自身を除く): 49820208

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6827, 13654, 20481, 27308, 34135, 40962, 54616, 68270, 81924, 88751, 102405, 109232, 136540, 163848, 177502, 204810, 266253, 273080, 327696, 355004, 409620, 443755, 532506, 546160, 710008, 819240, 887510, 1065012, 1331265, 1420016, 1638480, 1775020, 2130024, 2662530, 3550040, 4260048, 5325060, 7100080, 10650120, 21300240]

約数ペア:

[(1, 21300240), (2, 10650120), (3, 7100080), (4, 5325060), (5, 4260048), (6, 3550040), (8, 2662530), (10, 2130024), (12, 1775020), (13, 1638480), (15, 1420016), (16, 1331265), (20, 1065012), (24, 887510), (26, 819240), (30, 710008), (39, 546160), (40, 532506), (48, 443755), (52, 409620), (60, 355004), (65, 327696), (78, 273080), (80, 266253), (104, 204810), (120, 177502), (130, 163848), (156, 136540), (195, 109232), (208, 102405), (240, 88751), (260, 81924), (312, 68270), (390, 54616), (520, 40962), (624, 34135), (780, 27308), (1040, 20481), (1560, 13654), (3120, 6827)]