18698980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1279}}^1$

素因数の和:1348

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 23878940

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1279, 1462, 2558, 2924, 3655, 5116, 6395, 7310, 12790, 14620, 21743, 25580, 43486, 54997, 86972, 108715, 109994, 217430, 219988, 274985, 434860, 549970, 934949, 1099940, 1869898, 3739796, 4674745, 9349490, 18698980]

約数ペア:

[(1, 18698980), (2, 9349490), (4, 4674745), (5, 3739796), (10, 1869898), (17, 1099940), (20, 934949), (34, 549970), (43, 434860), (68, 274985), (85, 219988), (86, 217430), (170, 109994), (172, 108715), (215, 86972), (340, 54997), (430, 43486), (731, 25580), (860, 21743), (1279, 14620), (1462, 12790), (2558, 7310), (2924, 6395), (3655, 5116)]