211771780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{87509}}^1$

素因数の和:87540

約数の個数: 36

約数和(自身を含む): 488830860

約数和(自身を除く): 277059080

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 87509, 175018, 350036, 437545, 875090, 962599, 1750180, 1925198, 3850396, 4812995, 9625990, 10588589, 19251980, 21177178, 42354356, 52942945, 105885890, 211771780]

約数ペア:

[(1, 211771780), (2, 105885890), (4, 52942945), (5, 42354356), (10, 21177178), (11, 19251980), (20, 10588589), (22, 9625990), (44, 4812995), (55, 3850396), (110, 1925198), (121, 1750180), (220, 962599), (242, 875090), (484, 437545), (605, 350036), (1210, 175018), (2420, 87509)]