12740360

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{739}}^1$

素因数の和:1181

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 16030840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 739, 862, 1478, 1724, 2155, 2956, 3448, 3695, 4310, 5912, 7390, 8620, 14780, 17240, 29560, 318509, 637018, 1274036, 1592545, 2548072, 3185090, 6370180, 12740360]

約数ペア:

[(1, 12740360), (2, 6370180), (4, 3185090), (5, 2548072), (8, 1592545), (10, 1274036), (20, 637018), (40, 318509), (431, 29560), (739, 17240), (862, 14780), (1478, 8620), (1724, 7390), (2155, 5912), (2956, 4310), (3448, 3695)]