639990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{547}}^1$

素因数の和:573

約数の個数: 48

約数和(自身を含む): 1795248

約数和(自身を除く): 1155258

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 547, 585, 1094, 1170, 1641, 2735, 3282, 4923, 5470, 7111, 8205, 9846, 14222, 16410, 21333, 24615, 35555, 42666, 49230, 63999, 71110, 106665, 127998, 213330, 319995, 639990]

約数ペア:

[(1, 639990), (2, 319995), (3, 213330), (5, 127998), (6, 106665), (9, 71110), (10, 63999), (13, 49230), (15, 42666), (18, 35555), (26, 24615), (30, 21333), (39, 16410), (45, 14222), (65, 9846), (78, 8205), (90, 7111), (117, 5470), (130, 4923), (195, 3282), (234, 2735), (390, 1641), (547, 1170), (585, 1094)]