490299290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71161}}^1$

素因数の和:71234

約数の個数: 32

約数和(自身を含む): 968372496

約数和(自身を除く): 478073206

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3445, 6890, 71161, 142322, 355805, 711610, 925093, 1850186, 3771533, 4625465, 7543066, 9250930, 18857665, 37715330, 49029929, 98059858, 245149645, 490299290]

約数ペア:

[(1, 490299290), (2, 245149645), (5, 98059858), (10, 49029929), (13, 37715330), (26, 18857665), (53, 9250930), (65, 7543066), (106, 4625465), (130, 3771533), (265, 1850186), (530, 925093), (689, 711610), (1378, 355805), (3445, 142322), (6890, 71161)]