21101872

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2551}}^1$

素因数の和:2617

約数の個数: 40

約数和(自身を含む): 45568512

約数和(自身を除く): 24466640

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 176, 188, 376, 517, 752, 1034, 2068, 2551, 4136, 5102, 8272, 10204, 20408, 28061, 40816, 56122, 112244, 119897, 224488, 239794, 448976, 479588, 959176, 1318867, 1918352, 2637734, 5275468, 10550936, 21101872]

約数ペア:

[(1, 21101872), (2, 10550936), (4, 5275468), (8, 2637734), (11, 1918352), (16, 1318867), (22, 959176), (44, 479588), (47, 448976), (88, 239794), (94, 224488), (176, 119897), (188, 112244), (376, 56122), (517, 40816), (752, 28061), (1034, 20408), (2068, 10204), (2551, 8272), (4136, 5102)]