505731987

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{631}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 795308800

約数和(自身を除く): 289576813

約数列:

[1, 3, 9, 19, 43, 57, 109, 129, 171, 327, 387, 631, 817, 981, 1893, 2071, 2451, 4687, 5679, 6213, 7353, 11989, 14061, 18639, 27133, 35967, 42183, 68779, 81399, 89053, 107901, 206337, 244197, 267159, 515527, 619011, 801477, 1306801, 1546581, 2957497, 3920403, 4639743, 8872491, 11761209, 26617473, 56192443, 168577329, 505731987]

約数ペア:

[(1, 505731987), (3, 168577329), (9, 56192443), (19, 26617473), (43, 11761209), (57, 8872491), (109, 4639743), (129, 3920403), (171, 2957497), (327, 1546581), (387, 1306801), (631, 801477), (817, 619011), (981, 515527), (1893, 267159), (2071, 244197), (2451, 206337), (4687, 107901), (5679, 89053), (6213, 81399), (7353, 68779), (11989, 42183), (14061, 35967), (18639, 27133)]