21872872

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2851}}^1$

素因数の和:3001

約数の個数: 32

約数和(自身を含む): 47229120

約数和(自身を除く): 25356248

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 274, 548, 959, 1096, 1918, 2851, 3836, 5702, 7672, 11404, 19957, 22808, 39914, 79828, 159656, 390587, 781174, 1562348, 2734109, 3124696, 5468218, 10936436, 21872872]

約数ペア:

[(1, 21872872), (2, 10936436), (4, 5468218), (7, 3124696), (8, 2734109), (14, 1562348), (28, 781174), (56, 390587), (137, 159656), (274, 79828), (548, 39914), (959, 22808), (1096, 19957), (1918, 11404), (2851, 7672), (3836, 5702)]