81022900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{283}}^1\times {\mathrm{409}}^1$

素因数の和:713

約数の個数: 72

約数和(自身を含む): 202139840

約数和(自身を除く): 121116940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 283, 350, 409, 566, 700, 818, 1132, 1415, 1636, 1981, 2045, 2830, 2863, 3962, 4090, 5660, 5726, 7075, 7924, 8180, 9905, 10225, 11452, 14150, 14315, 19810, 20450, 28300, 28630, 39620, 40900, 49525, 57260, 71575, 99050, 115747, 143150, 198100, 231494, 286300, 462988, 578735, 810229, 1157470, 1620458, 2314940, 2893675, 3240916, 4051145, 5787350, 8102290, 11574700, 16204580, 20255725, 40511450, 81022900]

約数ペア:

[(1, 81022900), (2, 40511450), (4, 20255725), (5, 16204580), (7, 11574700), (10, 8102290), (14, 5787350), (20, 4051145), (25, 3240916), (28, 2893675), (35, 2314940), (50, 1620458), (70, 1157470), (100, 810229), (140, 578735), (175, 462988), (283, 286300), (350, 231494), (409, 198100), (566, 143150), (700, 115747), (818, 99050), (1132, 71575), (1415, 57260), (1636, 49525), (1981, 40900), (2045, 39620), (2830, 28630), (2863, 28300), (3962, 20450), (4090, 19810), (5660, 14315), (5726, 14150), (7075, 11452), (7924, 10225), (8180, 9905)]