21051604

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 44154880

約数和(自身を除く): 23103276

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 79, 124, 158, 217, 307, 316, 434, 553, 614, 868, 1106, 1228, 2149, 2212, 2449, 4298, 4898, 8596, 9517, 9796, 17143, 19034, 24253, 34286, 38068, 48506, 66619, 68572, 97012, 133238, 169771, 266476, 339542, 679084, 751843, 1503686, 3007372, 5262901, 10525802, 21051604]

約数ペア:

[(1, 21051604), (2, 10525802), (4, 5262901), (7, 3007372), (14, 1503686), (28, 751843), (31, 679084), (62, 339542), (79, 266476), (124, 169771), (158, 133238), (217, 97012), (307, 68572), (316, 66619), (434, 48506), (553, 38068), (614, 34286), (868, 24253), (1106, 19034), (1228, 17143), (2149, 9796), (2212, 9517), (2449, 8596), (4298, 4898)]