200017960

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{19457}}^1$

素因数の和:19725

約数の個数: 32

約数和(自身を含む): 451814760

約数和(自身を除く): 251796800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 19457, 38914, 77828, 97285, 155656, 194570, 389140, 778280, 5000449, 10000898, 20001796, 25002245, 40003592, 50004490, 100008980, 200017960]

約数ペア:

[(1, 200017960), (2, 100008980), (4, 50004490), (5, 40003592), (8, 25002245), (10, 20001796), (20, 10000898), (40, 5000449), (257, 778280), (514, 389140), (1028, 194570), (1285, 155656), (2056, 97285), (2570, 77828), (5140, 38914), (10280, 19457)]