28110320

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:199

約数の個数: 120

約数和(自身を含む): 77861088

約数和(自身を除く): 49750768

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 71, 80, 98, 101, 112, 140, 142, 196, 202, 245, 280, 284, 355, 392, 404, 490, 497, 505, 560, 568, 707, 710, 784, 808, 980, 994, 1010, 1136, 1414, 1420, 1616, 1960, 1988, 2020, 2485, 2828, 2840, 3479, 3535, 3920, 3976, 4040, 4949, 4970, 5656, 5680, 6958, 7070, 7171, 7952, 8080, 9898, 9940, 11312, 13916, 14140, 14342, 17395, 19796, 19880, 24745, 27832, 28280, 28684, 34790, 35855, 39592, 39760, 49490, 50197, 55664, 56560, 57368, 69580, 71710, 79184, 98980, 100394, 114736, 139160, 143420, 197960, 200788, 250985, 278320, 286840, 351379, 395920, 401576, 501970, 573680, 702758, 803152, 1003940, 1405516, 1756895, 2007880, 2811032, 3513790, 4015760, 5622064, 7027580, 14055160, 28110320]

約数ペア:

[(1, 28110320), (2, 14055160), (4, 7027580), (5, 5622064), (7, 4015760), (8, 3513790), (10, 2811032), (14, 2007880), (16, 1756895), (20, 1405516), (28, 1003940), (35, 803152), (40, 702758), (49, 573680), (56, 501970), (70, 401576), (71, 395920), (80, 351379), (98, 286840), (101, 278320), (112, 250985), (140, 200788), (142, 197960), (196, 143420), (202, 139160), (245, 114736), (280, 100394), (284, 98980), (355, 79184), (392, 71710), (404, 69580), (490, 57368), (497, 56560), (505, 55664), (560, 50197), (568, 49490), (707, 39760), (710, 39592), (784, 35855), (808, 34790), (980, 28684), (994, 28280), (1010, 27832), (1136, 24745), (1414, 19880), (1420, 19796), (1616, 17395), (1960, 14342), (1988, 14140), (2020, 13916), (2485, 11312), (2828, 9940), (2840, 9898), (3479, 8080), (3535, 7952), (3920, 7171), (3976, 7070), (4040, 6958), (4949, 5680), (4970, 5656)]