641587760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31699}}^1$

素因数の和:31746

約数の個数: 80

約数和(自身を含む): 1698105600

約数和(自身を除く): 1056517840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 176, 184, 220, 230, 253, 368, 440, 460, 506, 880, 920, 1012, 1265, 1840, 2024, 2530, 4048, 5060, 10120, 20240, 31699, 63398, 126796, 158495, 253592, 316990, 348689, 507184, 633980, 697378, 729077, 1267960, 1394756, 1458154, 1743445, 2535920, 2789512, 2916308, 3486890, 3645385, 5579024, 5832616, 6973780, 7290770, 8019847, 11665232, 13947560, 14581540, 16039694, 27895120, 29163080, 32079388, 40099235, 58326160, 64158776, 80198470, 128317552, 160396940, 320793880, 641587760]

約数ペア:

[(1, 641587760), (2, 320793880), (4, 160396940), (5, 128317552), (8, 80198470), (10, 64158776), (11, 58326160), (16, 40099235), (20, 32079388), (22, 29163080), (23, 27895120), (40, 16039694), (44, 14581540), (46, 13947560), (55, 11665232), (80, 8019847), (88, 7290770), (92, 6973780), (110, 5832616), (115, 5579024), (176, 3645385), (184, 3486890), (220, 2916308), (230, 2789512), (253, 2535920), (368, 1743445), (440, 1458154), (460, 1394756), (506, 1267960), (880, 729077), (920, 697378), (1012, 633980), (1265, 507184), (1840, 348689), (2024, 316990), (2530, 253592), (4048, 158495), (5060, 126796), (10120, 63398), (20240, 31699)]