38720920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{138289}}^1$

素因数の和:138307

約数の個数: 32

約数和(自身を含む): 99568800

約数和(自身を除く): 60847880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 138289, 276578, 553156, 691445, 968023, 1106312, 1382890, 1936046, 2765780, 3872092, 4840115, 5531560, 7744184, 9680230, 19360460, 38720920]

約数ペア:

[(1, 38720920), (2, 19360460), (4, 9680230), (5, 7744184), (7, 5531560), (8, 4840115), (10, 3872092), (14, 2765780), (20, 1936046), (28, 1382890), (35, 1106312), (40, 968023), (56, 691445), (70, 553156), (140, 276578), (280, 138289)]