18139268

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19963132

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 89, 116, 178, 203, 251, 356, 406, 502, 623, 812, 1004, 1246, 1757, 2492, 2581, 3514, 5162, 7028, 7279, 10324, 14558, 18067, 22339, 29116, 36134, 44678, 50953, 72268, 89356, 101906, 156373, 203812, 312746, 625492, 647831, 1295662, 2591324, 4534817, 9069634, 18139268]

約数ペア:

[(1, 18139268), (2, 9069634), (4, 4534817), (7, 2591324), (14, 1295662), (28, 647831), (29, 625492), (58, 312746), (89, 203812), (116, 156373), (178, 101906), (203, 89356), (251, 72268), (356, 50953), (406, 44678), (502, 36134), (623, 29116), (812, 22339), (1004, 18067), (1246, 14558), (1757, 10324), (2492, 7279), (2581, 7028), (3514, 5162)]