28253680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3881}}^1$

素因数の和:3914

約数の個数: 80

約数和(自身を含む): 80869824

約数和(自身を除く): 52616144

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 3881, 7280, 7762, 15524, 19405, 27167, 31048, 38810, 50453, 54334, 62096, 77620, 100906, 108668, 135835, 155240, 201812, 217336, 252265, 271670, 310480, 353171, 403624, 434672, 504530, 543340, 706342, 807248, 1009060, 1086680, 1412684, 1765855, 2018120, 2173360, 2825368, 3531710, 4036240, 5650736, 7063420, 14126840, 28253680]

約数ペア:

[(1, 28253680), (2, 14126840), (4, 7063420), (5, 5650736), (7, 4036240), (8, 3531710), (10, 2825368), (13, 2173360), (14, 2018120), (16, 1765855), (20, 1412684), (26, 1086680), (28, 1009060), (35, 807248), (40, 706342), (52, 543340), (56, 504530), (65, 434672), (70, 403624), (80, 353171), (91, 310480), (104, 271670), (112, 252265), (130, 217336), (140, 201812), (182, 155240), (208, 135835), (260, 108668), (280, 100906), (364, 77620), (455, 62096), (520, 54334), (560, 50453), (728, 38810), (910, 31048), (1040, 27167), (1456, 19405), (1820, 15524), (3640, 7762), (3881, 7280)]