21392775

素因数分解:

$3^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{773}}^1$

素因数の和:833

約数の個数: 48

約数和(自身を含む): 40309920

約数和(自身を除く): 18917145

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 123, 135, 205, 225, 369, 615, 675, 773, 1025, 1107, 1845, 2319, 3075, 3865, 5535, 6957, 9225, 11595, 19325, 20871, 27675, 31693, 34785, 57975, 95079, 104355, 158465, 173925, 285237, 475395, 521775, 792325, 855711, 1426185, 2376975, 4278555, 7130925, 21392775]

約数ペア:

[(1, 21392775), (3, 7130925), (5, 4278555), (9, 2376975), (15, 1426185), (25, 855711), (27, 792325), (41, 521775), (45, 475395), (75, 285237), (123, 173925), (135, 158465), (205, 104355), (225, 95079), (369, 57975), (615, 34785), (675, 31693), (773, 27675), (1025, 20871), (1107, 19325), (1845, 11595), (2319, 9225), (3075, 6957), (3865, 5535)]