21452008

素因数分解:

$2^3\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 43498980

約数和(自身を除く): 22046972

約数列:

[1, 2, 4, 8, 23, 37, 46, 74, 92, 137, 148, 184, 274, 296, 529, 548, 851, 1058, 1096, 1702, 2116, 3151, 3404, 4232, 5069, 6302, 6808, 10138, 12604, 19573, 20276, 25208, 39146, 40552, 72473, 78292, 116587, 144946, 156584, 233174, 289892, 466348, 579784, 932696, 2681501, 5363002, 10726004, 21452008]

約数ペア:

[(1, 21452008), (2, 10726004), (4, 5363002), (8, 2681501), (23, 932696), (37, 579784), (46, 466348), (74, 289892), (92, 233174), (137, 156584), (148, 144946), (184, 116587), (274, 78292), (296, 72473), (529, 40552), (548, 39146), (851, 25208), (1058, 20276), (1096, 19573), (1702, 12604), (2116, 10138), (3151, 6808), (3404, 6302), (4232, 5069)]