28255760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{269}}^1$

素因数の和:396

約数の個数: 80

約数和(自身を含む): 71714160

約数和(自身を除く): 43458400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 101, 104, 130, 202, 208, 260, 269, 404, 505, 520, 538, 808, 1010, 1040, 1076, 1313, 1345, 1616, 2020, 2152, 2626, 2690, 3497, 4040, 4304, 5252, 5380, 6565, 6994, 8080, 10504, 10760, 13130, 13988, 17485, 21008, 21520, 26260, 27169, 27976, 34970, 52520, 54338, 55952, 69940, 105040, 108676, 135845, 139880, 217352, 271690, 279760, 353197, 434704, 543380, 706394, 1086760, 1412788, 1765985, 2173520, 2825576, 3531970, 5651152, 7063940, 14127880, 28255760]

約数ペア:

[(1, 28255760), (2, 14127880), (4, 7063940), (5, 5651152), (8, 3531970), (10, 2825576), (13, 2173520), (16, 1765985), (20, 1412788), (26, 1086760), (40, 706394), (52, 543380), (65, 434704), (80, 353197), (101, 279760), (104, 271690), (130, 217352), (202, 139880), (208, 135845), (260, 108676), (269, 105040), (404, 69940), (505, 55952), (520, 54338), (538, 52520), (808, 34970), (1010, 27976), (1040, 27169), (1076, 26260), (1313, 21520), (1345, 21008), (1616, 17485), (2020, 13988), (2152, 13130), (2626, 10760), (2690, 10504), (3497, 8080), (4040, 6994), (4304, 6565), (5252, 5380)]