20917270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{293}}^1$

素因数の和:381

約数の個数: 48

約数和(自身を含む): 42230160

約数和(自身を除く): 21312890

約数列:

[1, 2, 5, 10, 11, 22, 55, 59, 110, 118, 121, 242, 293, 295, 586, 590, 605, 649, 1210, 1298, 1465, 2930, 3223, 3245, 6446, 6490, 7139, 14278, 16115, 17287, 32230, 34574, 35453, 35695, 70906, 71390, 86435, 172870, 177265, 190157, 354530, 380314, 950785, 1901570, 2091727, 4183454, 10458635, 20917270]

約数ペア:

[(1, 20917270), (2, 10458635), (5, 4183454), (10, 2091727), (11, 1901570), (22, 950785), (55, 380314), (59, 354530), (110, 190157), (118, 177265), (121, 172870), (242, 86435), (293, 71390), (295, 70906), (586, 35695), (590, 35453), (605, 34574), (649, 32230), (1210, 17287), (1298, 16115), (1465, 14278), (2930, 7139), (3223, 6490), (3245, 6446)]