21970840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28909}}^1$

素因数の和:28939

約数の個数: 32

約数和(自身を含む): 52038000

約数和(自身を除く): 30067160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28909, 57818, 115636, 144545, 231272, 289090, 549271, 578180, 1098542, 1156360, 2197084, 2746355, 4394168, 5492710, 10985420, 21970840]

約数ペア:

[(1, 21970840), (2, 10985420), (4, 5492710), (5, 4394168), (8, 2746355), (10, 2197084), (19, 1156360), (20, 1098542), (38, 578180), (40, 549271), (76, 289090), (95, 231272), (152, 144545), (190, 115636), (380, 57818), (760, 28909)]