308912840

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{11719}}^1$

素因数の和:12389

約数の個数: 32

約数和(自身を含む): 696168000

約数和(自身を除く): 387255160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 1318, 2636, 3295, 5272, 6590, 11719, 13180, 23438, 26360, 46876, 58595, 93752, 117190, 234380, 468760, 7722821, 15445642, 30891284, 38614105, 61782568, 77228210, 154456420, 308912840]

約数ペア:

[(1, 308912840), (2, 154456420), (4, 77228210), (5, 61782568), (8, 38614105), (10, 30891284), (20, 15445642), (40, 7722821), (659, 468760), (1318, 234380), (2636, 117190), (3295, 93752), (5272, 58595), (6590, 46876), (11719, 26360), (13180, 23438)]