19665160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15859}}^1$

素因数の和:15901

約数の個数: 32

約数和(自身を含む): 45676800

約数和(自身を除く): 26011640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15859, 31718, 63436, 79295, 126872, 158590, 317180, 491629, 634360, 983258, 1966516, 2458145, 3933032, 4916290, 9832580, 19665160]

約数ペア:

[(1, 19665160), (2, 9832580), (4, 4916290), (5, 3933032), (8, 2458145), (10, 1966516), (20, 983258), (31, 634360), (40, 491629), (62, 317180), (124, 158590), (155, 126872), (248, 79295), (310, 63436), (620, 31718), (1240, 15859)]