31312520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 73589040

約数和(自身を除く): 42276520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 61, 82, 122, 164, 205, 244, 305, 313, 328, 410, 488, 610, 626, 820, 1220, 1252, 1565, 1640, 2440, 2501, 2504, 3130, 5002, 6260, 10004, 12505, 12520, 12833, 19093, 20008, 25010, 25666, 38186, 50020, 51332, 64165, 76372, 95465, 100040, 102664, 128330, 152744, 190930, 256660, 381860, 513320, 763720, 782813, 1565626, 3131252, 3914065, 6262504, 7828130, 15656260, 31312520]

約数ペア:

[(1, 31312520), (2, 15656260), (4, 7828130), (5, 6262504), (8, 3914065), (10, 3131252), (20, 1565626), (40, 782813), (41, 763720), (61, 513320), (82, 381860), (122, 256660), (164, 190930), (205, 152744), (244, 128330), (305, 102664), (313, 100040), (328, 95465), (410, 76372), (488, 64165), (610, 51332), (626, 50020), (820, 38186), (1220, 25666), (1252, 25010), (1565, 20008), (1640, 19093), (2440, 12833), (2501, 12520), (2504, 12505), (3130, 10004), (5002, 6260)]