78398725

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 99982440

約数和(自身を除く): 21583715

約数列:

[1, 5, 25, 61, 101, 305, 505, 509, 1525, 2525, 2545, 6161, 12725, 30805, 31049, 51409, 154025, 155245, 257045, 776225, 1285225, 3135949, 15679745, 78398725]

約数ペア:

[(1, 78398725), (5, 15679745), (25, 3135949), (61, 1285225), (101, 776225), (305, 257045), (505, 155245), (509, 154025), (1525, 51409), (2525, 31049), (2545, 30805), (6161, 12725)]