78901480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281791}}^1$

素因数の和:281809

約数の個数: 32

約数和(自身を含む): 202890240

約数和(自身を除く): 123988760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281791, 563582, 1127164, 1408955, 1972537, 2254328, 2817910, 3945074, 5635820, 7890148, 9862685, 11271640, 15780296, 19725370, 39450740, 78901480]

約数ペア:

[(1, 78901480), (2, 39450740), (4, 19725370), (5, 15780296), (7, 11271640), (8, 9862685), (10, 7890148), (14, 5635820), (20, 3945074), (28, 2817910), (35, 2254328), (40, 1972537), (56, 1408955), (70, 1127164), (140, 563582), (280, 281791)]