21551355

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2207}}^1$

素因数の和:2256

約数の個数: 48

約数和(自身を含む): 44089344

約数和(自身を除く): 22537989

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 63, 93, 105, 155, 217, 279, 315, 465, 651, 1085, 1395, 1953, 2207, 3255, 6621, 9765, 11035, 15449, 19863, 33105, 46347, 68417, 77245, 99315, 139041, 205251, 231735, 342085, 478919, 615753, 695205, 1026255, 1436757, 2394595, 3078765, 4310271, 7183785, 21551355]

約数ペア:

[(1, 21551355), (3, 7183785), (5, 4310271), (7, 3078765), (9, 2394595), (15, 1436757), (21, 1026255), (31, 695205), (35, 615753), (45, 478919), (63, 342085), (93, 231735), (105, 205251), (155, 139041), (217, 99315), (279, 77245), (315, 68417), (465, 46347), (651, 33105), (1085, 19863), (1395, 15449), (1953, 11035), (2207, 9765), (3255, 6621)]