205430120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:307

約数の個数: 128

約数和(自身を含む): 547430400

約数和(自身を除く): 342000280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 109, 127, 140, 212, 218, 254, 265, 280, 371, 424, 436, 508, 530, 545, 635, 742, 763, 872, 889, 1016, 1060, 1090, 1270, 1484, 1526, 1778, 1855, 2120, 2180, 2540, 2968, 3052, 3556, 3710, 3815, 4360, 4445, 5080, 5777, 6104, 6731, 7112, 7420, 7630, 8890, 11554, 13462, 13843, 14840, 15260, 17780, 23108, 26924, 27686, 28885, 30520, 33655, 35560, 40439, 46216, 47117, 53848, 55372, 57770, 67310, 69215, 80878, 94234, 96901, 110744, 115540, 134620, 138430, 161756, 188468, 193802, 202195, 231080, 235585, 269240, 276860, 323512, 376936, 387604, 404390, 471170, 484505, 553720, 733679, 775208, 808780, 942340, 969010, 1467358, 1617560, 1884680, 1938020, 2934716, 3668395, 3876040, 5135753, 5869432, 7336790, 10271506, 14673580, 20543012, 25678765, 29347160, 41086024, 51357530, 102715060, 205430120]

約数ペア:

[(1, 205430120), (2, 102715060), (4, 51357530), (5, 41086024), (7, 29347160), (8, 25678765), (10, 20543012), (14, 14673580), (20, 10271506), (28, 7336790), (35, 5869432), (40, 5135753), (53, 3876040), (56, 3668395), (70, 2934716), (106, 1938020), (109, 1884680), (127, 1617560), (140, 1467358), (212, 969010), (218, 942340), (254, 808780), (265, 775208), (280, 733679), (371, 553720), (424, 484505), (436, 471170), (508, 404390), (530, 387604), (545, 376936), (635, 323512), (742, 276860), (763, 269240), (872, 235585), (889, 231080), (1016, 202195), (1060, 193802), (1090, 188468), (1270, 161756), (1484, 138430), (1526, 134620), (1778, 115540), (1855, 110744), (2120, 96901), (2180, 94234), (2540, 80878), (2968, 69215), (3052, 67310), (3556, 57770), (3710, 55372), (3815, 53848), (4360, 47117), (4445, 46216), (5080, 40439), (5777, 35560), (6104, 33655), (6731, 30520), (7112, 28885), (7420, 27686), (7630, 26924), (8890, 23108), (11554, 17780), (13462, 15260), (13843, 14840)]