1647940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 4032000

約数和(自身を除く): 2384060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 149, 158, 298, 316, 395, 553, 596, 745, 790, 1043, 1106, 1490, 1580, 2086, 2212, 2765, 2980, 4172, 5215, 5530, 10430, 11060, 11771, 20860, 23542, 47084, 58855, 82397, 117710, 164794, 235420, 329588, 411985, 823970, 1647940]

約数ペア:

[(1, 1647940), (2, 823970), (4, 411985), (5, 329588), (7, 235420), (10, 164794), (14, 117710), (20, 82397), (28, 58855), (35, 47084), (70, 23542), (79, 20860), (140, 11771), (149, 11060), (158, 10430), (298, 5530), (316, 5215), (395, 4172), (553, 2980), (596, 2765), (745, 2212), (790, 2086), (1043, 1580), (1106, 1490)]