20595735

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^2$

素因数の和:177

約数の個数: 48

約数和(自身を含む): 38132640

約数和(自身を除く): 17536905

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 61, 123, 135, 183, 205, 305, 369, 549, 615, 915, 1107, 1647, 1845, 2501, 2745, 3721, 5535, 7503, 8235, 11163, 12505, 18605, 22509, 33489, 37515, 55815, 67527, 100467, 112545, 152561, 167445, 337635, 457683, 502335, 762805, 1373049, 2288415, 4119147, 6865245, 20595735]

約数ペア:

[(1, 20595735), (3, 6865245), (5, 4119147), (9, 2288415), (15, 1373049), (27, 762805), (41, 502335), (45, 457683), (61, 337635), (123, 167445), (135, 152561), (183, 112545), (205, 100467), (305, 67527), (369, 55815), (549, 37515), (615, 33489), (915, 22509), (1107, 18605), (1647, 12505), (1845, 11163), (2501, 8235), (2745, 7503), (3721, 5535)]