21518090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 46096128

約数和(自身を除く): 24578038

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 37, 55, 74, 85, 110, 170, 185, 187, 311, 370, 374, 407, 622, 629, 814, 935, 1258, 1555, 1870, 2035, 3110, 3145, 3421, 4070, 5287, 6290, 6842, 6919, 10574, 11507, 13838, 17105, 23014, 26435, 34210, 34595, 52870, 57535, 58157, 69190, 115070, 116314, 126577, 195619, 253154, 290785, 391238, 581570, 632885, 978095, 1265770, 1956190, 2151809, 4303618, 10759045, 21518090]

約数ペア:

[(1, 21518090), (2, 10759045), (5, 4303618), (10, 2151809), (11, 1956190), (17, 1265770), (22, 978095), (34, 632885), (37, 581570), (55, 391238), (74, 290785), (85, 253154), (110, 195619), (170, 126577), (185, 116314), (187, 115070), (311, 69190), (370, 58157), (374, 57535), (407, 52870), (622, 34595), (629, 34210), (814, 26435), (935, 23014), (1258, 17105), (1555, 13838), (1870, 11507), (2035, 10574), (3110, 6919), (3145, 6842), (3421, 6290), (4070, 5287)]