28635920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:312

約数の個数: 80

約数和(自身を含む): 70709760

約数和(自身を除く): 42073840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 79, 80, 92, 115, 158, 184, 197, 230, 316, 368, 394, 395, 460, 632, 788, 790, 920, 985, 1264, 1576, 1580, 1817, 1840, 1970, 3152, 3160, 3634, 3940, 4531, 6320, 7268, 7880, 9062, 9085, 14536, 15563, 15760, 18124, 18170, 22655, 29072, 31126, 36248, 36340, 45310, 62252, 72496, 72680, 77815, 90620, 124504, 145360, 155630, 181240, 249008, 311260, 357949, 362480, 622520, 715898, 1245040, 1431796, 1789745, 2863592, 3579490, 5727184, 7158980, 14317960, 28635920]

約数ペア:

[(1, 28635920), (2, 14317960), (4, 7158980), (5, 5727184), (8, 3579490), (10, 2863592), (16, 1789745), (20, 1431796), (23, 1245040), (40, 715898), (46, 622520), (79, 362480), (80, 357949), (92, 311260), (115, 249008), (158, 181240), (184, 155630), (197, 145360), (230, 124504), (316, 90620), (368, 77815), (394, 72680), (395, 72496), (460, 62252), (632, 45310), (788, 36340), (790, 36248), (920, 31126), (985, 29072), (1264, 22655), (1576, 18170), (1580, 18124), (1817, 15760), (1840, 15563), (1970, 14536), (3152, 9085), (3160, 9062), (3634, 7880), (3940, 7268), (4531, 6320)]