25217440

素因数分解:

$2^5\times 5^1\times {\mathrm{397}}^2$

素因数の和:809

約数の個数: 36

約数和(自身を含む): 59726646

約数和(自身を除く): 34509206

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 397, 794, 1588, 1985, 3176, 3970, 6352, 7940, 12704, 15880, 31760, 63520, 157609, 315218, 630436, 788045, 1260872, 1576090, 2521744, 3152180, 5043488, 6304360, 12608720, 25217440]

約数ペア:

[(1, 25217440), (2, 12608720), (4, 6304360), (5, 5043488), (8, 3152180), (10, 2521744), (16, 1576090), (20, 1260872), (32, 788045), (40, 630436), (80, 315218), (160, 157609), (397, 63520), (794, 31760), (1588, 15880), (1985, 12704), (3176, 7940), (3970, 6352)]