21991410

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:608

約数の個数: 96

約数和(自身を含む): 66448512

約数和(自身を除く): 44457102

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 67, 70, 90, 105, 126, 134, 201, 210, 315, 335, 402, 469, 521, 603, 630, 670, 938, 1005, 1042, 1206, 1407, 1563, 2010, 2345, 2605, 2814, 3015, 3126, 3647, 4221, 4689, 4690, 5210, 6030, 7035, 7294, 7815, 8442, 9378, 10941, 14070, 15630, 18235, 21105, 21882, 23445, 32823, 34907, 36470, 42210, 46890, 54705, 65646, 69814, 104721, 109410, 164115, 174535, 209442, 244349, 314163, 328230, 349070, 488698, 523605, 628326, 733047, 1047210, 1221745, 1466094, 1570815, 2199141, 2443490, 3141630, 3665235, 4398282, 7330470, 10995705, 21991410]

約数ペア:

[(1, 21991410), (2, 10995705), (3, 7330470), (5, 4398282), (6, 3665235), (7, 3141630), (9, 2443490), (10, 2199141), (14, 1570815), (15, 1466094), (18, 1221745), (21, 1047210), (30, 733047), (35, 628326), (42, 523605), (45, 488698), (63, 349070), (67, 328230), (70, 314163), (90, 244349), (105, 209442), (126, 174535), (134, 164115), (201, 109410), (210, 104721), (315, 69814), (335, 65646), (402, 54705), (469, 46890), (521, 42210), (603, 36470), (630, 34907), (670, 32823), (938, 23445), (1005, 21882), (1042, 21105), (1206, 18235), (1407, 15630), (1563, 14070), (2010, 10941), (2345, 9378), (2605, 8442), (2814, 7815), (3015, 7294), (3126, 7035), (3647, 6030), (4221, 5210), (4689, 4690)]