21835575

素因数分解:

$3^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:326

約数の個数: 60

約数和(自身を含む): 41591088

約数和(自身を除く): 19755513

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 81, 123, 135, 205, 225, 263, 369, 405, 615, 675, 789, 1025, 1107, 1315, 1845, 2025, 2367, 3075, 3321, 3945, 5535, 6575, 7101, 9225, 10783, 11835, 16605, 19725, 21303, 27675, 32349, 35505, 53915, 59175, 83025, 97047, 106515, 161745, 177525, 269575, 291141, 485235, 532575, 808725, 873423, 1455705, 2426175, 4367115, 7278525, 21835575]

約数ペア:

[(1, 21835575), (3, 7278525), (5, 4367115), (9, 2426175), (15, 1455705), (25, 873423), (27, 808725), (41, 532575), (45, 485235), (75, 291141), (81, 269575), (123, 177525), (135, 161745), (205, 106515), (225, 97047), (263, 83025), (369, 59175), (405, 53915), (615, 35505), (675, 32349), (789, 27675), (1025, 21303), (1107, 19725), (1315, 16605), (1845, 11835), (2025, 10783), (2367, 9225), (3075, 7101), (3321, 6575), (3945, 5535)]