18968848

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{349}}^1$

素因数の和:479

約数の個数: 40

約数和(自身を含む): 38192000

約数和(自身を除く): 19223152

約数列:

[1, 2, 4, 8, 16, 43, 79, 86, 158, 172, 316, 344, 349, 632, 688, 698, 1264, 1396, 2792, 3397, 5584, 6794, 13588, 15007, 27176, 27571, 30014, 54352, 55142, 60028, 110284, 120056, 220568, 240112, 441136, 1185553, 2371106, 4742212, 9484424, 18968848]

約数ペア:

[(1, 18968848), (2, 9484424), (4, 4742212), (8, 2371106), (16, 1185553), (43, 441136), (79, 240112), (86, 220568), (158, 120056), (172, 110284), (316, 60028), (344, 55142), (349, 54352), (632, 30014), (688, 27571), (698, 27176), (1264, 15007), (1396, 13588), (2792, 6794), (3397, 5584)]