256310040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{305131}}^1$

素因数の和:305152

約数の個数: 64

約数和(自身を含む): 878780160

約数和(自身を除く): 622470120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 305131, 610262, 915393, 1220524, 1525655, 1830786, 2135917, 2441048, 3051310, 3661572, 4271834, 4576965, 6102620, 6407751, 7323144, 8543668, 9153930, 10679585, 12205240, 12815502, 17087336, 18307860, 21359170, 25631004, 32038755, 36615720, 42718340, 51262008, 64077510, 85436680, 128155020, 256310040]

約数ペア:

[(1, 256310040), (2, 128155020), (3, 85436680), (4, 64077510), (5, 51262008), (6, 42718340), (7, 36615720), (8, 32038755), (10, 25631004), (12, 21359170), (14, 18307860), (15, 17087336), (20, 12815502), (21, 12205240), (24, 10679585), (28, 9153930), (30, 8543668), (35, 7323144), (40, 6407751), (42, 6102620), (56, 4576965), (60, 4271834), (70, 3661572), (84, 3051310), (105, 2441048), (120, 2135917), (140, 1830786), (168, 1525655), (210, 1220524), (280, 915393), (420, 610262), (840, 305131)]