19886025

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 34997760

約数和(自身を除く): 15111735

約数列:

[1, 3, 5, 15, 25, 29, 41, 75, 87, 123, 145, 205, 223, 435, 615, 669, 725, 1025, 1115, 1189, 2175, 3075, 3345, 3567, 5575, 5945, 6467, 9143, 16725, 17835, 19401, 27429, 29725, 32335, 45715, 89175, 97005, 137145, 161675, 228575, 265147, 485025, 685725, 795441, 1325735, 3977205, 6628675, 19886025]

約数ペア:

[(1, 19886025), (3, 6628675), (5, 3977205), (15, 1325735), (25, 795441), (29, 685725), (41, 485025), (75, 265147), (87, 228575), (123, 161675), (145, 137145), (205, 97005), (223, 89175), (435, 45715), (615, 32335), (669, 29725), (725, 27429), (1025, 19401), (1115, 17835), (1189, 16725), (2175, 9143), (3075, 6467), (3345, 5945), (3567, 5575)]