19781948

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{691}}^1$

素因数の和:1133

約数の個数: 24

約数和(自身を含む): 36795024

約数和(自身を除く): 17013076

約数列:

[1, 2, 4, 17, 34, 68, 421, 691, 842, 1382, 1684, 2764, 7157, 11747, 14314, 23494, 28628, 46988, 290911, 581822, 1163644, 4945487, 9890974, 19781948]

約数ペア:

[(1, 19781948), (2, 9890974), (4, 4945487), (17, 1163644), (34, 581822), (68, 290911), (421, 46988), (691, 28628), (842, 23494), (1382, 14314), (1684, 11747), (2764, 7157)]