31313840

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 76334400

約数和(自身を除く): 45020560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 71, 74, 80, 142, 148, 149, 185, 284, 296, 298, 355, 370, 568, 592, 596, 710, 740, 745, 1136, 1192, 1420, 1480, 1490, 2384, 2627, 2840, 2960, 2980, 5254, 5513, 5680, 5960, 10508, 10579, 11026, 11920, 13135, 21016, 21158, 22052, 26270, 27565, 42032, 42316, 44104, 52540, 52895, 55130, 84632, 88208, 105080, 105790, 110260, 169264, 210160, 211580, 220520, 391423, 423160, 441040, 782846, 846320, 1565692, 1957115, 3131384, 3914230, 6262768, 7828460, 15656920, 31313840]

約数ペア:

[(1, 31313840), (2, 15656920), (4, 7828460), (5, 6262768), (8, 3914230), (10, 3131384), (16, 1957115), (20, 1565692), (37, 846320), (40, 782846), (71, 441040), (74, 423160), (80, 391423), (142, 220520), (148, 211580), (149, 210160), (185, 169264), (284, 110260), (296, 105790), (298, 105080), (355, 88208), (370, 84632), (568, 55130), (592, 52895), (596, 52540), (710, 44104), (740, 42316), (745, 42032), (1136, 27565), (1192, 26270), (1420, 22052), (1480, 21158), (1490, 21016), (2384, 13135), (2627, 11920), (2840, 11026), (2960, 10579), (2980, 10508), (5254, 5960), (5513, 5680)]