19843875

素因数分解:

$3^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 36990720

約数和(自身を除く): 17146845

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 125, 155, 225, 279, 375, 465, 569, 775, 1125, 1395, 1707, 2325, 2845, 3875, 5121, 6975, 8535, 11625, 14225, 17639, 25605, 34875, 42675, 52917, 71125, 88195, 128025, 158751, 213375, 264585, 440975, 640125, 793755, 1322925, 2204875, 3968775, 6614625, 19843875]

約数ペア:

[(1, 19843875), (3, 6614625), (5, 3968775), (9, 2204875), (15, 1322925), (25, 793755), (31, 640125), (45, 440975), (75, 264585), (93, 213375), (125, 158751), (155, 128025), (225, 88195), (279, 71125), (375, 52917), (465, 42675), (569, 34875), (775, 25605), (1125, 17639), (1395, 14225), (1707, 11625), (2325, 8535), (2845, 6975), (3875, 5121)]