21122416

素因数分解:

$2^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1831}}^1$

素因数の和:1949

約数の個数: 40

約数和(自身を含む): 47250944

約数和(自身を除く): 26128528

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 103, 112, 206, 412, 721, 824, 1442, 1648, 1831, 2884, 3662, 5768, 7324, 11536, 12817, 14648, 25634, 29296, 51268, 102536, 188593, 205072, 377186, 754372, 1320151, 1508744, 2640302, 3017488, 5280604, 10561208, 21122416]

約数ペア:

[(1, 21122416), (2, 10561208), (4, 5280604), (7, 3017488), (8, 2640302), (14, 1508744), (16, 1320151), (28, 754372), (56, 377186), (103, 205072), (112, 188593), (206, 102536), (412, 51268), (721, 29296), (824, 25634), (1442, 14648), (1648, 12817), (1831, 11536), (2884, 7324), (3662, 5768)]