21150480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6779}}^1$

素因数の和:6808

約数の個数: 80

約数和(自身を含む): 70620480

約数和(自身を除く): 49470000

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, 6779, 13558, 20337, 27116, 33895, 40674, 54232, 67790, 81348, 88127, 101685, 108464, 135580, 162696, 176254, 203370, 264381, 271160, 325392, 352508, 406740, 440635, 528762, 542320, 705016, 813480, 881270, 1057524, 1321905, 1410032, 1626960, 1762540, 2115048, 2643810, 3525080, 4230096, 5287620, 7050160, 10575240, 21150480]

約数ペア:

[(1, 21150480), (2, 10575240), (3, 7050160), (4, 5287620), (5, 4230096), (6, 3525080), (8, 2643810), (10, 2115048), (12, 1762540), (13, 1626960), (15, 1410032), (16, 1321905), (20, 1057524), (24, 881270), (26, 813480), (30, 705016), (39, 542320), (40, 528762), (48, 440635), (52, 406740), (60, 352508), (65, 325392), (78, 271160), (80, 264381), (104, 203370), (120, 176254), (130, 162696), (156, 135580), (195, 108464), (208, 101685), (240, 88127), (260, 81348), (312, 67790), (390, 54232), (520, 40674), (624, 33895), (780, 27116), (1040, 20337), (1560, 13558), (3120, 6779)]