28100240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{139}}^1$

素因数の和:197

約数の個数: 120

約数和(自身を含む): 79369920

約数和(自身を除く): 51269680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 139, 140, 152, 190, 266, 278, 280, 304, 361, 380, 532, 556, 560, 665, 695, 722, 760, 973, 1064, 1112, 1330, 1390, 1444, 1520, 1805, 1946, 2128, 2224, 2527, 2641, 2660, 2780, 2888, 3610, 3892, 4865, 5054, 5282, 5320, 5560, 5776, 7220, 7784, 9730, 10108, 10564, 10640, 11120, 12635, 13205, 14440, 15568, 18487, 19460, 20216, 21128, 25270, 26410, 28880, 36974, 38920, 40432, 42256, 50179, 50540, 52820, 73948, 77840, 92435, 100358, 101080, 105640, 147896, 184870, 200716, 202160, 211280, 250895, 295792, 351253, 369740, 401432, 501790, 702506, 739480, 802864, 1003580, 1405012, 1478960, 1756265, 2007160, 2810024, 3512530, 4014320, 5620048, 7025060, 14050120, 28100240]

約数ペア:

[(1, 28100240), (2, 14050120), (4, 7025060), (5, 5620048), (7, 4014320), (8, 3512530), (10, 2810024), (14, 2007160), (16, 1756265), (19, 1478960), (20, 1405012), (28, 1003580), (35, 802864), (38, 739480), (40, 702506), (56, 501790), (70, 401432), (76, 369740), (80, 351253), (95, 295792), (112, 250895), (133, 211280), (139, 202160), (140, 200716), (152, 184870), (190, 147896), (266, 105640), (278, 101080), (280, 100358), (304, 92435), (361, 77840), (380, 73948), (532, 52820), (556, 50540), (560, 50179), (665, 42256), (695, 40432), (722, 38920), (760, 36974), (973, 28880), (1064, 26410), (1112, 25270), (1330, 21128), (1390, 20216), (1444, 19460), (1520, 18487), (1805, 15568), (1946, 14440), (2128, 13205), (2224, 12635), (2527, 11120), (2641, 10640), (2660, 10564), (2780, 10108), (2888, 9730), (3610, 7784), (3892, 7220), (4865, 5776), (5054, 5560), (5282, 5320)]