28875880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 76723200

約数和(自身を除く): 47847320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 31, 40, 44, 55, 58, 62, 73, 88, 110, 116, 124, 145, 146, 155, 220, 232, 248, 290, 292, 310, 319, 341, 365, 440, 580, 584, 620, 638, 682, 730, 803, 899, 1160, 1240, 1276, 1364, 1460, 1595, 1606, 1705, 1798, 2117, 2263, 2552, 2728, 2920, 3190, 3212, 3410, 3596, 4015, 4234, 4495, 4526, 6380, 6424, 6820, 7192, 8030, 8468, 8990, 9052, 9889, 10585, 11315, 12760, 13640, 16060, 16936, 17980, 18104, 19778, 21170, 22630, 23287, 24893, 32120, 35960, 39556, 42340, 45260, 46574, 49445, 49786, 65627, 79112, 84680, 90520, 93148, 98890, 99572, 116435, 124465, 131254, 186296, 197780, 199144, 232870, 248930, 262508, 328135, 395560, 465740, 497860, 525016, 656270, 721897, 931480, 995720, 1312540, 1443794, 2625080, 2887588, 3609485, 5775176, 7218970, 14437940, 28875880]

約数ペア:

[(1, 28875880), (2, 14437940), (4, 7218970), (5, 5775176), (8, 3609485), (10, 2887588), (11, 2625080), (20, 1443794), (22, 1312540), (29, 995720), (31, 931480), (40, 721897), (44, 656270), (55, 525016), (58, 497860), (62, 465740), (73, 395560), (88, 328135), (110, 262508), (116, 248930), (124, 232870), (145, 199144), (146, 197780), (155, 186296), (220, 131254), (232, 124465), (248, 116435), (290, 99572), (292, 98890), (310, 93148), (319, 90520), (341, 84680), (365, 79112), (440, 65627), (580, 49786), (584, 49445), (620, 46574), (638, 45260), (682, 42340), (730, 39556), (803, 35960), (899, 32120), (1160, 24893), (1240, 23287), (1276, 22630), (1364, 21170), (1460, 19778), (1595, 18104), (1606, 17980), (1705, 16936), (1798, 16060), (2117, 13640), (2263, 12760), (2552, 11315), (2728, 10585), (2920, 9889), (3190, 9052), (3212, 8990), (3410, 8468), (3596, 8030), (4015, 7192), (4234, 6820), (4495, 6424), (4526, 6380)]