28404640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{16139}}^1$

素因数の和:16165

約数の個数: 48

約数和(自身を含む): 73211040

約数和(自身を除く): 44806400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 16139, 32278, 64556, 80695, 129112, 161390, 177529, 258224, 322780, 355058, 516448, 645560, 710116, 887645, 1291120, 1420232, 1775290, 2582240, 2840464, 3550580, 5680928, 7101160, 14202320, 28404640]

約数ペア:

[(1, 28404640), (2, 14202320), (4, 7101160), (5, 5680928), (8, 3550580), (10, 2840464), (11, 2582240), (16, 1775290), (20, 1420232), (22, 1291120), (32, 887645), (40, 710116), (44, 645560), (55, 516448), (80, 355058), (88, 322780), (110, 258224), (160, 177529), (176, 161390), (220, 129112), (352, 80695), (440, 64556), (880, 32278), (1760, 16139)]