12128440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{9781}}^1$

素因数の和:9823

約数の個数: 32

約数和(自身を含む): 28172160

約数和(自身を除く): 16043720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 9781, 19562, 39124, 48905, 78248, 97810, 195620, 303211, 391240, 606422, 1212844, 1516055, 2425688, 3032110, 6064220, 12128440]

約数ペア:

[(1, 12128440), (2, 6064220), (4, 3032110), (5, 2425688), (8, 1516055), (10, 1212844), (20, 606422), (31, 391240), (40, 303211), (62, 195620), (124, 97810), (155, 78248), (248, 48905), (310, 39124), (620, 19562), (1240, 9781)]