21121386

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 50319360

約数和(自身を除く): 29197974

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 103, 143, 206, 239, 286, 309, 429, 478, 618, 717, 858, 1133, 1339, 1434, 2266, 2629, 2678, 3107, 3399, 4017, 5258, 6214, 6798, 7887, 8034, 9321, 14729, 15774, 18642, 24617, 29458, 34177, 44187, 49234, 68354, 73851, 88374, 102531, 147702, 205062, 270787, 320021, 541574, 640042, 812361, 960063, 1624722, 1920126, 3520231, 7040462, 10560693, 21121386]

約数ペア:

[(1, 21121386), (2, 10560693), (3, 7040462), (6, 3520231), (11, 1920126), (13, 1624722), (22, 960063), (26, 812361), (33, 640042), (39, 541574), (66, 320021), (78, 270787), (103, 205062), (143, 147702), (206, 102531), (239, 88374), (286, 73851), (309, 68354), (429, 49234), (478, 44187), (618, 34177), (717, 29458), (858, 24617), (1133, 18642), (1339, 15774), (1434, 14729), (2266, 9321), (2629, 8034), (2678, 7887), (3107, 6798), (3399, 6214), (4017, 5258)]