31771220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1373}}^1$

素因数の和:1484

約数の個数: 48

約数和(自身を含む): 72712080

約数和(自身を除く): 40940860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 890, 1157, 1373, 1780, 2314, 2746, 4628, 5492, 5785, 6865, 11570, 13730, 17849, 23140, 27460, 35698, 71396, 89245, 122197, 178490, 244394, 356980, 488788, 610985, 1221970, 1588561, 2443940, 3177122, 6354244, 7942805, 15885610, 31771220]

約数ペア:

[(1, 31771220), (2, 15885610), (4, 7942805), (5, 6354244), (10, 3177122), (13, 2443940), (20, 1588561), (26, 1221970), (52, 610985), (65, 488788), (89, 356980), (130, 244394), (178, 178490), (260, 122197), (356, 89245), (445, 71396), (890, 35698), (1157, 27460), (1373, 23140), (1780, 17849), (2314, 13730), (2746, 11570), (4628, 6865), (5492, 5785)]