16721865

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11987}}^1$

素因数の和:12029

約数の個数: 24

約数和(自身を含む): 29922048

約数和(自身を除く): 13200183

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 11987, 35961, 59935, 107883, 179805, 371597, 539415, 1114791, 1857985, 3344373, 5573955, 16721865]

約数ペア:

[(1, 16721865), (3, 5573955), (5, 3344373), (9, 1857985), (15, 1114791), (31, 539415), (45, 371597), (93, 179805), (155, 107883), (279, 59935), (465, 35961), (1395, 11987)]