21275710

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:396

約数の個数: 32

約数和(自身を含む): 39204000

約数和(自身を除く): 17928290

約数列:

[1, 2, 5, 10, 109, 131, 149, 218, 262, 298, 545, 655, 745, 1090, 1310, 1490, 14279, 16241, 19519, 28558, 32482, 39038, 71395, 81205, 97595, 142790, 162410, 195190, 2127571, 4255142, 10637855, 21275710]

約数ペア:

[(1, 21275710), (2, 10637855), (5, 4255142), (10, 2127571), (109, 195190), (131, 162410), (149, 142790), (218, 97595), (262, 81205), (298, 71395), (545, 39038), (655, 32482), (745, 28558), (1090, 19519), (1310, 16241), (1490, 14279)]