12908120

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1031}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 29164320

約数和(自身を除く): 16256200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1031, 1252, 1565, 2062, 2504, 3130, 4124, 5155, 6260, 8248, 10310, 12520, 20620, 41240, 322703, 645406, 1290812, 1613515, 2581624, 3227030, 6454060, 12908120]

約数ペア:

[(1, 12908120), (2, 6454060), (4, 3227030), (5, 2581624), (8, 1613515), (10, 1290812), (20, 645406), (40, 322703), (313, 41240), (626, 20620), (1031, 12520), (1252, 10310), (1565, 8248), (2062, 6260), (2504, 5155), (3130, 4124)]