20653240

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5323}}^1$

素因数の和:5431

約数の個数: 32

約数和(自身を含む): 46957680

約数和(自身を除く): 26304440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5323, 10646, 21292, 26615, 42584, 53230, 106460, 212920, 516331, 1032662, 2065324, 2581655, 4130648, 5163310, 10326620, 20653240]

約数ペア:

[(1, 20653240), (2, 10326620), (4, 5163310), (5, 4130648), (8, 2581655), (10, 2065324), (20, 1032662), (40, 516331), (97, 212920), (194, 106460), (388, 53230), (485, 42584), (776, 26615), (970, 21292), (1940, 10646), (3880, 5323)]