21999516

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{821}}^1$

素因数の和:875

約数の個数: 96

約数和(自身を含む): 66286080

約数和(自身を除く): 44286564

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 29, 33, 42, 44, 58, 66, 77, 84, 87, 116, 132, 154, 174, 203, 231, 308, 319, 348, 406, 462, 609, 638, 812, 821, 924, 957, 1218, 1276, 1642, 1914, 2233, 2436, 2463, 3284, 3828, 4466, 4926, 5747, 6699, 8932, 9031, 9852, 11494, 13398, 17241, 18062, 22988, 23809, 26796, 27093, 34482, 36124, 47618, 54186, 63217, 68964, 71427, 95236, 108372, 126434, 142854, 166663, 189651, 252868, 261899, 285708, 333326, 379302, 499989, 523798, 666652, 758604, 785697, 999978, 1047596, 1571394, 1833293, 1999956, 3142788, 3666586, 5499879, 7333172, 10999758, 21999516]

約数ペア:

[(1, 21999516), (2, 10999758), (3, 7333172), (4, 5499879), (6, 3666586), (7, 3142788), (11, 1999956), (12, 1833293), (14, 1571394), (21, 1047596), (22, 999978), (28, 785697), (29, 758604), (33, 666652), (42, 523798), (44, 499989), (58, 379302), (66, 333326), (77, 285708), (84, 261899), (87, 252868), (116, 189651), (132, 166663), (154, 142854), (174, 126434), (203, 108372), (231, 95236), (308, 71427), (319, 68964), (348, 63217), (406, 54186), (462, 47618), (609, 36124), (638, 34482), (812, 27093), (821, 26796), (924, 23809), (957, 22988), (1218, 18062), (1276, 17241), (1642, 13398), (1914, 11494), (2233, 9852), (2436, 9031), (2463, 8932), (3284, 6699), (3828, 5747), (4466, 4926)]