21561770

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{401}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 41100480

約数和(自身を除く): 19538710

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 283, 401, 566, 802, 1415, 2005, 2830, 4010, 5377, 7619, 10754, 15238, 26885, 38095, 53770, 76190, 113483, 226966, 567415, 1134830, 2156177, 4312354, 10780885, 21561770]

約数ペア:

[(1, 21561770), (2, 10780885), (5, 4312354), (10, 2156177), (19, 1134830), (38, 567415), (95, 226966), (190, 113483), (283, 76190), (401, 53770), (566, 38095), (802, 26885), (1415, 15238), (2005, 10754), (2830, 7619), (4010, 5377)]