215865

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:71

約数の個数: 40

約数和(自身を含む): 426888

約数和(自身を除く): 211023

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 41, 45, 65, 81, 117, 123, 135, 195, 205, 351, 369, 405, 533, 585, 615, 1053, 1107, 1599, 1755, 1845, 2665, 3321, 4797, 5265, 5535, 7995, 14391, 16605, 23985, 43173, 71955, 215865]

約数ペア:

[(1, 215865), (3, 71955), (5, 43173), (9, 23985), (13, 16605), (15, 14391), (27, 7995), (39, 5535), (41, 5265), (45, 4797), (65, 3321), (81, 2665), (117, 1845), (123, 1755), (135, 1599), (195, 1107), (205, 1053), (351, 615), (369, 585), (405, 533)]