20149678940

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1831}}^1\times {\mathrm{2141}}^1$

素因数の和:4238

約数の個数: 48

約数和(自身を含む): 42522024384

約数和(自身を除く): 22372345444

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 1831, 2141, 2570, 3662, 4282, 5140, 7324, 8564, 9155, 10705, 18310, 21410, 36620, 42820, 470567, 550237, 941134, 1100474, 1882268, 2200948, 2352835, 2751185, 3920171, 4705670, 5502370, 7840342, 9411340, 11004740, 15680684, 19600855, 39201710, 78403420, 1007483947, 2014967894, 4029935788, 5037419735, 10074839470, 20149678940]

約数ペア:

[(1, 20149678940), (2, 10074839470), (4, 5037419735), (5, 4029935788), (10, 2014967894), (20, 1007483947), (257, 78403420), (514, 39201710), (1028, 19600855), (1285, 15680684), (1831, 11004740), (2141, 9411340), (2570, 7840342), (3662, 5502370), (4282, 4705670), (5140, 3920171), (7324, 2751185), (8564, 2352835), (9155, 2200948), (10705, 1882268), (18310, 1100474), (21410, 941134), (36620, 550237), (42820, 470567)]