20157304880

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3049}}^1\times {\mathrm{3593}}^1$

素因数の和:6678

約数の個数: 80

約数和(自身を含む): 48933028800

約数和(自身を除く): 28775723920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 3049, 3593, 6098, 7186, 12196, 14372, 15245, 17965, 24392, 28744, 30490, 35930, 48784, 57488, 60980, 70127, 71860, 82639, 121960, 140254, 143720, 165278, 243920, 280508, 287440, 330556, 350635, 413195, 561016, 661112, 701270, 826390, 1122032, 1322224, 1402540, 1652780, 2805080, 3305560, 5610160, 6611120, 10955057, 21910114, 43820228, 54775285, 87640456, 109550570, 175280912, 219101140, 251966311, 438202280, 503932622, 876404560, 1007865244, 1259831555, 2015730488, 2519663110, 4031460976, 5039326220, 10078652440, 20157304880]

約数ペア:

[(1, 20157304880), (2, 10078652440), (4, 5039326220), (5, 4031460976), (8, 2519663110), (10, 2015730488), (16, 1259831555), (20, 1007865244), (23, 876404560), (40, 503932622), (46, 438202280), (80, 251966311), (92, 219101140), (115, 175280912), (184, 109550570), (230, 87640456), (368, 54775285), (460, 43820228), (920, 21910114), (1840, 10955057), (3049, 6611120), (3593, 5610160), (6098, 3305560), (7186, 2805080), (12196, 1652780), (14372, 1402540), (15245, 1322224), (17965, 1122032), (24392, 826390), (28744, 701270), (30490, 661112), (35930, 561016), (48784, 413195), (57488, 350635), (60980, 330556), (70127, 287440), (71860, 280508), (82639, 243920), (121960, 165278), (140254, 143720)]