31130320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{809}}^1$

素因数の和:872

約数の個数: 80

約数和(自身を含む): 80151120

約数和(自身を除く): 49020800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 481, 520, 592, 740, 809, 962, 1040, 1480, 1618, 1924, 2405, 2960, 3236, 3848, 4045, 4810, 6472, 7696, 8090, 9620, 10517, 12944, 16180, 19240, 21034, 29933, 32360, 38480, 42068, 52585, 59866, 64720, 84136, 105170, 119732, 149665, 168272, 210340, 239464, 299330, 389129, 420680, 478928, 598660, 778258, 841360, 1197320, 1556516, 1945645, 2394640, 3113032, 3891290, 6226064, 7782580, 15565160, 31130320]

約数ペア:

[(1, 31130320), (2, 15565160), (4, 7782580), (5, 6226064), (8, 3891290), (10, 3113032), (13, 2394640), (16, 1945645), (20, 1556516), (26, 1197320), (37, 841360), (40, 778258), (52, 598660), (65, 478928), (74, 420680), (80, 389129), (104, 299330), (130, 239464), (148, 210340), (185, 168272), (208, 149665), (260, 119732), (296, 105170), (370, 84136), (481, 64720), (520, 59866), (592, 52585), (740, 42068), (809, 38480), (962, 32360), (1040, 29933), (1480, 21034), (1618, 19240), (1924, 16180), (2405, 12944), (2960, 10517), (3236, 9620), (3848, 8090), (4045, 7696), (4810, 6472)]