21506888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{911}}^1$

素因数の和:1157

約数の個数: 32

約数和(自身を含む): 43666560

約数和(自身を除く): 22159672

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 227, 454, 908, 911, 1816, 1822, 2951, 3644, 5902, 7288, 11804, 11843, 23608, 23686, 47372, 94744, 206797, 413594, 827188, 1654376, 2688361, 5376722, 10753444, 21506888]

約数ペア:

[(1, 21506888), (2, 10753444), (4, 5376722), (8, 2688361), (13, 1654376), (26, 827188), (52, 413594), (104, 206797), (227, 94744), (454, 47372), (908, 23686), (911, 23608), (1816, 11843), (1822, 11804), (2951, 7288), (3644, 5902)]