1780290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 4694976

約数和(自身を除く): 2914686

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 131, 151, 262, 302, 393, 453, 655, 755, 786, 906, 1179, 1310, 1359, 1510, 1965, 2265, 2358, 2718, 3930, 4530, 5895, 6795, 11790, 13590, 19781, 39562, 59343, 98905, 118686, 178029, 197810, 296715, 356058, 593430, 890145, 1780290]

約数ペア:

[(1, 1780290), (2, 890145), (3, 593430), (5, 356058), (6, 296715), (9, 197810), (10, 178029), (15, 118686), (18, 98905), (30, 59343), (45, 39562), (90, 19781), (131, 13590), (151, 11790), (262, 6795), (302, 5895), (393, 4530), (453, 3930), (655, 2718), (755, 2358), (786, 2265), (906, 1965), (1179, 1510), (1310, 1359)]