18897789118

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{419}}^1\times {\mathrm{1523}}^1$

素因数の和:2041

約数の個数: 64

約数和(自身を含む): 32905232640

約数和(自身を除く): 14007443522

約数列:

[1, 2, 13, 17, 26, 34, 67, 134, 221, 419, 442, 838, 871, 1139, 1523, 1742, 2278, 3046, 5447, 7123, 10894, 14246, 14807, 19799, 25891, 28073, 29614, 39598, 51782, 56146, 92599, 102041, 185198, 204082, 336583, 364949, 477241, 638137, 673166, 729898, 954482, 1276274, 1326533, 1734697, 2653066, 3469394, 6204133, 8295781, 10848329, 12408266, 16591562, 21696658, 22551061, 42755179, 45102122, 85510358, 141028277, 282056554, 555817327, 726838043, 1111634654, 1453676086, 9448894559, 18897789118]

約数ペア:

[(1, 18897789118), (2, 9448894559), (13, 1453676086), (17, 1111634654), (26, 726838043), (34, 555817327), (67, 282056554), (134, 141028277), (221, 85510358), (419, 45102122), (442, 42755179), (838, 22551061), (871, 21696658), (1139, 16591562), (1523, 12408266), (1742, 10848329), (2278, 8295781), (3046, 6204133), (5447, 3469394), (7123, 2653066), (10894, 1734697), (14246, 1326533), (14807, 1276274), (19799, 954482), (25891, 729898), (28073, 673166), (29614, 638137), (39598, 477241), (51782, 364949), (56146, 336583), (92599, 204082), (102041, 185198)]