18996790

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{491}}^1$

素因数の和:624

約数の個数: 32

約数和(自身を含む): 35388576

約数和(自身を除く): 16391786

約数列:

[1, 2, 5, 10, 53, 73, 106, 146, 265, 365, 491, 530, 730, 982, 2455, 3869, 4910, 7738, 19345, 26023, 35843, 38690, 52046, 71686, 130115, 179215, 260230, 358430, 1899679, 3799358, 9498395, 18996790]

約数ペア:

[(1, 18996790), (2, 9498395), (5, 3799358), (10, 1899679), (53, 358430), (73, 260230), (106, 179215), (146, 130115), (265, 71686), (365, 52046), (491, 38690), (530, 35843), (730, 26023), (982, 19345), (2455, 7738), (3869, 4910)]