19694493

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 35468160

約数和(自身を除く): 15773667

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 139, 173, 273, 417, 519, 819, 973, 1211, 1251, 1557, 1807, 2249, 2919, 3633, 5421, 6747, 8757, 10899, 12649, 15743, 16263, 20241, 24047, 37947, 47229, 72141, 113841, 141687, 168329, 216423, 312611, 504987, 937833, 1514961, 2188277, 2813499, 6564831, 19694493]

約数ペア:

[(1, 19694493), (3, 6564831), (7, 2813499), (9, 2188277), (13, 1514961), (21, 937833), (39, 504987), (63, 312611), (91, 216423), (117, 168329), (139, 141687), (173, 113841), (273, 72141), (417, 47229), (519, 37947), (819, 24047), (973, 20241), (1211, 16263), (1251, 15743), (1557, 12649), (1807, 10899), (2249, 8757), (2919, 6747), (3633, 5421)]