21740488

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1217}}^1$

素因数の和:1270

約数の個数: 64

約数和(自身を含む): 52617600

約数和(自身を除く): 30877112

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 29, 44, 56, 58, 77, 88, 116, 154, 203, 232, 308, 319, 406, 616, 638, 812, 1217, 1276, 1624, 2233, 2434, 2552, 4466, 4868, 8519, 8932, 9736, 13387, 17038, 17864, 26774, 34076, 35293, 53548, 68152, 70586, 93709, 107096, 141172, 187418, 247051, 282344, 374836, 388223, 494102, 749672, 776446, 988204, 1552892, 1976408, 2717561, 3105784, 5435122, 10870244, 21740488]

約数ペア:

[(1, 21740488), (2, 10870244), (4, 5435122), (7, 3105784), (8, 2717561), (11, 1976408), (14, 1552892), (22, 988204), (28, 776446), (29, 749672), (44, 494102), (56, 388223), (58, 374836), (77, 282344), (88, 247051), (116, 187418), (154, 141172), (203, 107096), (232, 93709), (308, 70586), (319, 68152), (406, 53548), (616, 35293), (638, 34076), (812, 26774), (1217, 17864), (1276, 17038), (1624, 13387), (2233, 9736), (2434, 8932), (2552, 8519), (4466, 4868)]