78987640

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{29473}}^1$

素因数の和:29551

約数の個数: 32

約数和(自身を含む): 180380880

約数和(自身を除く): 101393240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 29473, 58946, 117892, 147365, 235784, 294730, 589460, 1178920, 1974691, 3949382, 7898764, 9873455, 15797528, 19746910, 39493820, 78987640]

約数ペア:

[(1, 78987640), (2, 39493820), (4, 19746910), (5, 15797528), (8, 9873455), (10, 7898764), (20, 3949382), (40, 1974691), (67, 1178920), (134, 589460), (268, 294730), (335, 235784), (536, 147365), (670, 117892), (1340, 58946), (2680, 29473)]