31880680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1657}}^1$

素因数の和:1718

約数の個数: 64

約数和(自身を含む): 79385040

約数和(自身を除く): 47504360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1480, 1657, 1924, 2405, 3314, 3848, 4810, 6628, 8285, 9620, 13256, 16570, 19240, 21541, 33140, 43082, 61309, 66280, 86164, 107705, 122618, 172328, 215410, 245236, 306545, 430820, 490472, 613090, 797017, 861640, 1226180, 1594034, 2452360, 3188068, 3985085, 6376136, 7970170, 15940340, 31880680]

約数ペア:

[(1, 31880680), (2, 15940340), (4, 7970170), (5, 6376136), (8, 3985085), (10, 3188068), (13, 2452360), (20, 1594034), (26, 1226180), (37, 861640), (40, 797017), (52, 613090), (65, 490472), (74, 430820), (104, 306545), (130, 245236), (148, 215410), (185, 172328), (260, 122618), (296, 107705), (370, 86164), (481, 66280), (520, 61309), (740, 43082), (962, 33140), (1480, 21541), (1657, 19240), (1924, 16570), (2405, 13256), (3314, 9620), (3848, 8285), (4810, 6628)]