19909010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{751}}^1$

素因数の和:1010

約数の個数: 32

約数和(自身を含む): 39308544

約数和(自身を除く): 19399534

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 241, 482, 751, 1205, 1502, 2410, 2651, 3755, 5302, 7510, 8261, 13255, 16522, 26510, 41305, 82610, 180991, 361982, 904955, 1809910, 1990901, 3981802, 9954505, 19909010]

約数ペア:

[(1, 19909010), (2, 9954505), (5, 3981802), (10, 1990901), (11, 1809910), (22, 904955), (55, 361982), (110, 180991), (241, 82610), (482, 41305), (751, 26510), (1205, 16522), (1502, 13255), (2410, 8261), (2651, 7510), (3755, 5302)]