21489272

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2801}}^1$

素因数の和:2951

約数の個数: 32

約数和(自身を含む): 46401120

約数和(自身を除く): 24911848

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 274, 548, 959, 1096, 1918, 2801, 3836, 5602, 7672, 11204, 19607, 22408, 39214, 78428, 156856, 383737, 767474, 1534948, 2686159, 3069896, 5372318, 10744636, 21489272]

約数ペア:

[(1, 21489272), (2, 10744636), (4, 5372318), (7, 3069896), (8, 2686159), (14, 1534948), (28, 767474), (56, 383737), (137, 156856), (274, 78428), (548, 39214), (959, 22408), (1096, 19607), (1918, 11204), (2801, 7672), (3836, 5602)]