21256080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2857}}^1$

素因数の和:2904

約数の個数: 80

約数和(自身を含む): 68043264

約数和(自身を除く): 46787184

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2857, 3720, 5714, 7440, 8571, 11428, 14285, 17142, 22856, 28570, 34284, 42855, 45712, 57140, 68568, 85710, 88567, 114280, 137136, 171420, 177134, 228560, 265701, 342840, 354268, 442835, 531402, 685680, 708536, 885670, 1062804, 1328505, 1417072, 1771340, 2125608, 2657010, 3542680, 4251216, 5314020, 7085360, 10628040, 21256080]

約数ペア:

[(1, 21256080), (2, 10628040), (3, 7085360), (4, 5314020), (5, 4251216), (6, 3542680), (8, 2657010), (10, 2125608), (12, 1771340), (15, 1417072), (16, 1328505), (20, 1062804), (24, 885670), (30, 708536), (31, 685680), (40, 531402), (48, 442835), (60, 354268), (62, 342840), (80, 265701), (93, 228560), (120, 177134), (124, 171420), (155, 137136), (186, 114280), (240, 88567), (248, 85710), (310, 68568), (372, 57140), (465, 45712), (496, 42855), (620, 34284), (744, 28570), (930, 22856), (1240, 17142), (1488, 14285), (1860, 11428), (2480, 8571), (2857, 7440), (3720, 5714)]