21995090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2383}}^1$

素因数の和:2474

約数の個数: 32

約数和(自身を含む): 43255296

約数和(自身を除く): 21260206

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 355, 710, 923, 1846, 2383, 4615, 4766, 9230, 11915, 23830, 30979, 61958, 154895, 169193, 309790, 338386, 845965, 1691930, 2199509, 4399018, 10997545, 21995090]

約数ペア:

[(1, 21995090), (2, 10997545), (5, 4399018), (10, 2199509), (13, 1691930), (26, 845965), (65, 338386), (71, 309790), (130, 169193), (142, 154895), (355, 61958), (710, 30979), (923, 23830), (1846, 11915), (2383, 9230), (4615, 4766)]