20783925

素因数分解:

$3^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{751}}^1$

素因数の和:811

約数の個数: 48

約数和(自身を含む): 39164160

約数和(自身を除く): 18380235

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 123, 135, 205, 225, 369, 615, 675, 751, 1025, 1107, 1845, 2253, 3075, 3755, 5535, 6759, 9225, 11265, 18775, 20277, 27675, 30791, 33795, 56325, 92373, 101385, 153955, 168975, 277119, 461865, 506925, 769775, 831357, 1385595, 2309325, 4156785, 6927975, 20783925]

約数ペア:

[(1, 20783925), (3, 6927975), (5, 4156785), (9, 2309325), (15, 1385595), (25, 831357), (27, 769775), (41, 506925), (45, 461865), (75, 277119), (123, 168975), (135, 153955), (205, 101385), (225, 92373), (369, 56325), (615, 33795), (675, 30791), (751, 27675), (1025, 20277), (1107, 18775), (1845, 11265), (2253, 9225), (3075, 6759), (3755, 5535)]