21855372

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 67415040

約数和(自身を除く): 45559668

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 31, 33, 42, 44, 49, 62, 66, 77, 84, 93, 98, 109, 124, 132, 147, 154, 186, 196, 217, 218, 231, 294, 308, 327, 341, 372, 434, 436, 462, 539, 588, 651, 654, 682, 763, 868, 924, 1023, 1078, 1199, 1302, 1308, 1364, 1519, 1526, 1617, 2046, 2156, 2289, 2387, 2398, 2604, 3038, 3052, 3234, 3379, 3597, 4092, 4557, 4578, 4774, 4796, 5341, 6076, 6468, 6758, 7161, 7194, 8393, 9114, 9156, 9548, 10137, 10682, 13516, 14322, 14388, 16023, 16709, 16786, 18228, 20274, 21364, 23653, 25179, 28644, 32046, 33418, 33572, 37169, 40548, 47306, 50127, 50358, 58751, 64092, 66836, 70959, 74338, 94612, 100254, 100716, 111507, 117502, 141918, 148676, 165571, 176253, 200508, 223014, 235004, 260183, 283836, 331142, 352506, 446028, 496713, 520366, 662284, 705012, 780549, 993426, 1040732, 1561098, 1821281, 1986852, 3122196, 3642562, 5463843, 7285124, 10927686, 21855372]

約数ペア:

[(1, 21855372), (2, 10927686), (3, 7285124), (4, 5463843), (6, 3642562), (7, 3122196), (11, 1986852), (12, 1821281), (14, 1561098), (21, 1040732), (22, 993426), (28, 780549), (31, 705012), (33, 662284), (42, 520366), (44, 496713), (49, 446028), (62, 352506), (66, 331142), (77, 283836), (84, 260183), (93, 235004), (98, 223014), (109, 200508), (124, 176253), (132, 165571), (147, 148676), (154, 141918), (186, 117502), (196, 111507), (217, 100716), (218, 100254), (231, 94612), (294, 74338), (308, 70959), (327, 66836), (341, 64092), (372, 58751), (434, 50358), (436, 50127), (462, 47306), (539, 40548), (588, 37169), (651, 33572), (654, 33418), (682, 32046), (763, 28644), (868, 25179), (924, 23653), (1023, 21364), (1078, 20274), (1199, 18228), (1302, 16786), (1308, 16709), (1364, 16023), (1519, 14388), (1526, 14322), (1617, 13516), (2046, 10682), (2156, 10137), (2289, 9548), (2387, 9156), (2398, 9114), (2604, 8393), (3038, 7194), (3052, 7161), (3234, 6758), (3379, 6468), (3597, 6076), (4092, 5341), (4557, 4796), (4578, 4774)]