1999137020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1\times {\mathrm{4621}}^1$

素因数の和:4950

約数の個数: 48

約数和(自身を含む): 4261410048

約数和(自身を除く): 2262273028

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 223, 388, 446, 485, 892, 970, 1115, 1940, 2230, 4460, 4621, 9242, 18484, 21631, 23105, 43262, 46210, 86524, 92420, 108155, 216310, 432620, 448237, 896474, 1030483, 1792948, 2060966, 2241185, 4121932, 4482370, 5152415, 8964740, 10304830, 20609660, 99956851, 199913702, 399827404, 499784255, 999568510, 1999137020]

約数ペア:

[(1, 1999137020), (2, 999568510), (4, 499784255), (5, 399827404), (10, 199913702), (20, 99956851), (97, 20609660), (194, 10304830), (223, 8964740), (388, 5152415), (446, 4482370), (485, 4121932), (892, 2241185), (970, 2060966), (1115, 1792948), (1940, 1030483), (2230, 896474), (4460, 448237), (4621, 432620), (9242, 216310), (18484, 108155), (21631, 92420), (23105, 86524), (43262, 46210)]