28465840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:398

約数の個数: 80

約数和(自身を含む): 72245376

約数和(自身を除く): 43779536

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 101, 104, 130, 202, 208, 260, 271, 404, 505, 520, 542, 808, 1010, 1040, 1084, 1313, 1355, 1616, 2020, 2168, 2626, 2710, 3523, 4040, 4336, 5252, 5420, 6565, 7046, 8080, 10504, 10840, 13130, 14092, 17615, 21008, 21680, 26260, 27371, 28184, 35230, 52520, 54742, 56368, 70460, 105040, 109484, 136855, 140920, 218968, 273710, 281840, 355823, 437936, 547420, 711646, 1094840, 1423292, 1779115, 2189680, 2846584, 3558230, 5693168, 7116460, 14232920, 28465840]

約数ペア:

[(1, 28465840), (2, 14232920), (4, 7116460), (5, 5693168), (8, 3558230), (10, 2846584), (13, 2189680), (16, 1779115), (20, 1423292), (26, 1094840), (40, 711646), (52, 547420), (65, 437936), (80, 355823), (101, 281840), (104, 273710), (130, 218968), (202, 140920), (208, 136855), (260, 109484), (271, 105040), (404, 70460), (505, 56368), (520, 54742), (542, 52520), (808, 35230), (1010, 28184), (1040, 27371), (1084, 26260), (1313, 21680), (1355, 21008), (1616, 17615), (2020, 14092), (2168, 13130), (2626, 10840), (2710, 10504), (3523, 8080), (4040, 7046), (4336, 6565), (5252, 5420)]