21031960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18131}}^1$

素因数の和:18171

約数の個数: 32

約数和(自身を含む): 48956400

約数和(自身を除く): 27924440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18131, 36262, 72524, 90655, 145048, 181310, 362620, 525799, 725240, 1051598, 2103196, 2628995, 4206392, 5257990, 10515980, 21031960]

約数ペア:

[(1, 21031960), (2, 10515980), (4, 5257990), (5, 4206392), (8, 2628995), (10, 2103196), (20, 1051598), (29, 725240), (40, 525799), (58, 362620), (116, 181310), (145, 145048), (232, 90655), (290, 72524), (580, 36262), (1160, 18131)]