72813140

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{8447}}^1$

素因数の和:8887

約数の個数: 24

約数和(自身を含む): 153280512

約数和(自身を除く): 80467372

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 4310, 8447, 8620, 16894, 33788, 42235, 84470, 168940, 3640657, 7281314, 14562628, 18203285, 36406570, 72813140]

約数ペア:

[(1, 72813140), (2, 36406570), (4, 18203285), (5, 14562628), (10, 7281314), (20, 3640657), (431, 168940), (862, 84470), (1724, 42235), (2155, 33788), (4310, 16894), (8447, 8620)]