20728080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28789}}^1$

素因数の和:28808

約数の個数: 60

約数和(自身を含む): 69614220

約数和(自身を除く): 48886140

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28789, 57578, 86367, 115156, 143945, 172734, 230312, 259101, 287890, 345468, 431835, 460624, 518202, 575780, 690936, 863670, 1036404, 1151560, 1295505, 1381872, 1727340, 2072808, 2303120, 2591010, 3454680, 4145616, 5182020, 6909360, 10364040, 20728080]

約数ペア:

[(1, 20728080), (2, 10364040), (3, 6909360), (4, 5182020), (5, 4145616), (6, 3454680), (8, 2591010), (9, 2303120), (10, 2072808), (12, 1727340), (15, 1381872), (16, 1295505), (18, 1151560), (20, 1036404), (24, 863670), (30, 690936), (36, 575780), (40, 518202), (45, 460624), (48, 431835), (60, 345468), (72, 287890), (80, 259101), (90, 230312), (120, 172734), (144, 143945), (180, 115156), (240, 86367), (360, 57578), (720, 28789)]