79721900

素因数分解:

$2^2\times 5^2\times {\mathrm{487}}^1\times {\mathrm{1637}}^1$

素因数の和:2138

約数の個数: 36

約数和(自身を含む): 173457648

約数和(自身を除く): 93735748

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 487, 974, 1637, 1948, 2435, 3274, 4870, 6548, 8185, 9740, 12175, 16370, 24350, 32740, 40925, 48700, 81850, 163700, 797219, 1594438, 3188876, 3986095, 7972190, 15944380, 19930475, 39860950, 79721900]

約数ペア:

[(1, 79721900), (2, 39860950), (4, 19930475), (5, 15944380), (10, 7972190), (20, 3986095), (25, 3188876), (50, 1594438), (100, 797219), (487, 163700), (974, 81850), (1637, 48700), (1948, 40925), (2435, 32740), (3274, 24350), (4870, 16370), (6548, 12175), (8185, 9740)]