2255780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{61}}^1$

素因数の和:156

約数の個数: 36

約数和(自身を含む): 4929372

約数和(自身を除く): 2673592

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 172, 215, 244, 305, 430, 610, 860, 1220, 1849, 2623, 3698, 5246, 7396, 9245, 10492, 13115, 18490, 26230, 36980, 52460, 112789, 225578, 451156, 563945, 1127890, 2255780]

約数ペア:

[(1, 2255780), (2, 1127890), (4, 563945), (5, 451156), (10, 225578), (20, 112789), (43, 52460), (61, 36980), (86, 26230), (122, 18490), (172, 13115), (215, 10492), (244, 9245), (305, 7396), (430, 5246), (610, 3698), (860, 2623), (1220, 1849)]