209778820

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{40813}}^1$

素因数の和:41079

約数の個数: 24

約数和(自身を含む): 442260504

約数和(自身を除く): 232481684

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 40813, 81626, 163252, 204065, 408130, 816260, 10488941, 20977882, 41955764, 52444705, 104889410, 209778820]

約数ペア:

[(1, 209778820), (2, 104889410), (4, 52444705), (5, 41955764), (10, 20977882), (20, 10488941), (257, 816260), (514, 408130), (1028, 204065), (1285, 163252), (2570, 81626), (5140, 40813)]