12278440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3449}}^1$

素因数の和:3549

約数の個数: 32

約数和(自身を含む): 27945000

約数和(自身を除く): 15666560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3449, 3560, 6898, 13796, 17245, 27592, 34490, 68980, 137960, 306961, 613922, 1227844, 1534805, 2455688, 3069610, 6139220, 12278440]

約数ペア:

[(1, 12278440), (2, 6139220), (4, 3069610), (5, 2455688), (8, 1534805), (10, 1227844), (20, 613922), (40, 306961), (89, 137960), (178, 68980), (356, 34490), (445, 27592), (712, 17245), (890, 13796), (1780, 6898), (3449, 3560)]