21496580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{659}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 30395260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 233, 466, 659, 932, 1165, 1318, 1631, 2330, 2636, 3262, 3295, 4613, 4660, 6524, 6590, 8155, 9226, 13180, 16310, 18452, 23065, 32620, 46130, 92260, 153547, 307094, 614188, 767735, 1074829, 1535470, 2149658, 3070940, 4299316, 5374145, 10748290, 21496580]

約数ペア:

[(1, 21496580), (2, 10748290), (4, 5374145), (5, 4299316), (7, 3070940), (10, 2149658), (14, 1535470), (20, 1074829), (28, 767735), (35, 614188), (70, 307094), (140, 153547), (233, 92260), (466, 46130), (659, 32620), (932, 23065), (1165, 18452), (1318, 16310), (1631, 13180), (2330, 9226), (2636, 8155), (3262, 6590), (3295, 6524), (4613, 4660)]