20080112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5081}}^1$

素因数の和:5121

約数の個数: 40

約数和(自身を含む): 44111760

約数和(自身を除く): 24031648

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5081, 10162, 20324, 40648, 66053, 81296, 96539, 132106, 193078, 264212, 386156, 528424, 772312, 1056848, 1255007, 1544624, 2510014, 5020028, 10040056, 20080112]

約数ペア:

[(1, 20080112), (2, 10040056), (4, 5020028), (8, 2510014), (13, 1544624), (16, 1255007), (19, 1056848), (26, 772312), (38, 528424), (52, 386156), (76, 264212), (104, 193078), (152, 132106), (208, 96539), (247, 81296), (304, 66053), (494, 40648), (988, 20324), (1976, 10162), (3952, 5081)]