21856270

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3109}}^1$

素因数の和:3172

約数の個数: 32

約数和(自身を含む): 42544800

約数和(自身を除く): 20688530

約数列:

[1, 2, 5, 10, 19, 37, 38, 74, 95, 185, 190, 370, 703, 1406, 3109, 3515, 6218, 7030, 15545, 31090, 59071, 115033, 118142, 230066, 295355, 575165, 590710, 1150330, 2185627, 4371254, 10928135, 21856270]

約数ペア:

[(1, 21856270), (2, 10928135), (5, 4371254), (10, 2185627), (19, 1150330), (37, 590710), (38, 575165), (74, 295355), (95, 230066), (185, 118142), (190, 115033), (370, 59071), (703, 31090), (1406, 15545), (3109, 7030), (3515, 6218)]