21866420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{881}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 49342608

約数和(自身を除く): 27476188

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 73, 85, 146, 170, 292, 340, 365, 730, 881, 1241, 1460, 1762, 2482, 3524, 4405, 4964, 6205, 8810, 12410, 14977, 17620, 24820, 29954, 59908, 64313, 74885, 128626, 149770, 257252, 299540, 321565, 643130, 1093321, 1286260, 2186642, 4373284, 5466605, 10933210, 21866420]

約数ペア:

[(1, 21866420), (2, 10933210), (4, 5466605), (5, 4373284), (10, 2186642), (17, 1286260), (20, 1093321), (34, 643130), (68, 321565), (73, 299540), (85, 257252), (146, 149770), (170, 128626), (292, 74885), (340, 64313), (365, 59908), (730, 29954), (881, 24820), (1241, 17620), (1460, 14977), (1762, 12410), (2482, 8810), (3524, 6205), (4405, 4964)]