81612448

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{499}}^1$

素因数の和:797

約数の個数: 48

約数和(自身を含む): 170100000

約数和(自身を除く): 88487552

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 269, 304, 499, 538, 608, 998, 1076, 1996, 2152, 3992, 4304, 5111, 7984, 8608, 9481, 10222, 15968, 18962, 20444, 37924, 40888, 75848, 81776, 134231, 151696, 163552, 268462, 303392, 536924, 1073848, 2147696, 2550389, 4295392, 5100778, 10201556, 20403112, 40806224, 81612448]

約数ペア:

[(1, 81612448), (2, 40806224), (4, 20403112), (8, 10201556), (16, 5100778), (19, 4295392), (32, 2550389), (38, 2147696), (76, 1073848), (152, 536924), (269, 303392), (304, 268462), (499, 163552), (538, 151696), (608, 134231), (998, 81776), (1076, 75848), (1996, 40888), (2152, 37924), (3992, 20444), (4304, 18962), (5111, 15968), (7984, 10222), (8608, 9481)]