1981406080

素因数分解:

$2^7\times 5^1\times {\mathrm{139}}^1\times {\mathrm{22273}}^1$

素因数の和:22431

約数の個数: 64

約数和(自身を含む): 4771090800

約数和(自身を除く): 2789684720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 278, 320, 556, 640, 695, 1112, 1390, 2224, 2780, 4448, 5560, 8896, 11120, 17792, 22240, 22273, 44480, 44546, 88960, 89092, 111365, 178184, 222730, 356368, 445460, 712736, 890920, 1425472, 1781840, 2850944, 3095947, 3563680, 6191894, 7127360, 12383788, 14254720, 15479735, 24767576, 30959470, 49535152, 61918940, 99070304, 123837880, 198140608, 247675760, 396281216, 495351520, 990703040, 1981406080]

約数ペア:

[(1, 1981406080), (2, 990703040), (4, 495351520), (5, 396281216), (8, 247675760), (10, 198140608), (16, 123837880), (20, 99070304), (32, 61918940), (40, 49535152), (64, 30959470), (80, 24767576), (128, 15479735), (139, 14254720), (160, 12383788), (278, 7127360), (320, 6191894), (556, 3563680), (640, 3095947), (695, 2850944), (1112, 1781840), (1390, 1425472), (2224, 890920), (2780, 712736), (4448, 445460), (5560, 356368), (8896, 222730), (11120, 178184), (17792, 111365), (22240, 89092), (22273, 88960), (44480, 44546)]