21003740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1783}}^1$

素因数の和:1842

約数の個数: 48

約数和(自身を含む): 47953920

約数和(自身を除く): 26950180

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 1783, 2356, 2945, 3566, 5890, 7132, 8915, 11780, 17830, 33877, 35660, 55273, 67754, 110546, 135508, 169385, 221092, 276365, 338770, 552730, 677540, 1050187, 1105460, 2100374, 4200748, 5250935, 10501870, 21003740]

約数ペア:

[(1, 21003740), (2, 10501870), (4, 5250935), (5, 4200748), (10, 2100374), (19, 1105460), (20, 1050187), (31, 677540), (38, 552730), (62, 338770), (76, 276365), (95, 221092), (124, 169385), (155, 135508), (190, 110546), (310, 67754), (380, 55273), (589, 35660), (620, 33877), (1178, 17830), (1783, 11780), (2356, 8915), (2945, 7132), (3566, 5890)]