28845880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1451}}^1$

素因数の和:1540

約数の個数: 64

約数和(自身を含む): 75271680

約数和(自身を除く): 46425800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1451, 1988, 2485, 2840, 2902, 3976, 4970, 5804, 7255, 9940, 10157, 11608, 14510, 19880, 20314, 29020, 40628, 50785, 58040, 81256, 101570, 103021, 203140, 206042, 406280, 412084, 515105, 721147, 824168, 1030210, 1442294, 2060420, 2884588, 3605735, 4120840, 5769176, 7211470, 14422940, 28845880]

約数ペア:

[(1, 28845880), (2, 14422940), (4, 7211470), (5, 5769176), (7, 4120840), (8, 3605735), (10, 2884588), (14, 2060420), (20, 1442294), (28, 1030210), (35, 824168), (40, 721147), (56, 515105), (70, 412084), (71, 406280), (140, 206042), (142, 203140), (280, 103021), (284, 101570), (355, 81256), (497, 58040), (568, 50785), (710, 40628), (994, 29020), (1420, 20314), (1451, 19880), (1988, 14510), (2485, 11608), (2840, 10157), (2902, 9940), (3976, 7255), (4970, 5804)]