16819880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 48660480

約数和(自身を除く): 31840600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 43, 44, 55, 56, 70, 77, 86, 88, 110, 127, 140, 154, 172, 215, 220, 254, 280, 301, 308, 344, 385, 430, 440, 473, 508, 602, 616, 635, 770, 860, 889, 946, 1016, 1204, 1270, 1397, 1505, 1540, 1720, 1778, 1892, 2365, 2408, 2540, 2794, 3010, 3080, 3311, 3556, 3784, 4445, 4730, 5080, 5461, 5588, 6020, 6622, 6985, 7112, 8890, 9460, 9779, 10922, 11176, 12040, 13244, 13970, 16555, 17780, 18920, 19558, 21844, 26488, 27305, 27940, 33110, 35560, 38227, 39116, 43688, 48895, 54610, 55880, 60071, 66220, 76454, 78232, 97790, 109220, 120142, 132440, 152908, 191135, 195580, 218440, 240284, 300355, 305816, 382270, 391160, 420497, 480568, 600710, 764540, 840994, 1201420, 1529080, 1681988, 2102485, 2402840, 3363976, 4204970, 8409940, 16819880]

約数ペア:

[(1, 16819880), (2, 8409940), (4, 4204970), (5, 3363976), (7, 2402840), (8, 2102485), (10, 1681988), (11, 1529080), (14, 1201420), (20, 840994), (22, 764540), (28, 600710), (35, 480568), (40, 420497), (43, 391160), (44, 382270), (55, 305816), (56, 300355), (70, 240284), (77, 218440), (86, 195580), (88, 191135), (110, 152908), (127, 132440), (140, 120142), (154, 109220), (172, 97790), (215, 78232), (220, 76454), (254, 66220), (280, 60071), (301, 55880), (308, 54610), (344, 48895), (385, 43688), (430, 39116), (440, 38227), (473, 35560), (508, 33110), (602, 27940), (616, 27305), (635, 26488), (770, 21844), (860, 19558), (889, 18920), (946, 17780), (1016, 16555), (1204, 13970), (1270, 13244), (1397, 12040), (1505, 11176), (1540, 10922), (1720, 9779), (1778, 9460), (1892, 8890), (2365, 7112), (2408, 6985), (2540, 6622), (2794, 6020), (3010, 5588), (3080, 5461), (3311, 5080), (3556, 4730), (3784, 4445)]