20494292

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 45747072

約数和(自身を除く): 25252780

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 61, 71, 91, 122, 142, 169, 182, 244, 284, 338, 364, 427, 497, 676, 793, 854, 923, 994, 1183, 1586, 1708, 1846, 1988, 2366, 3172, 3692, 4331, 4732, 5551, 6461, 8662, 10309, 11102, 11999, 12922, 17324, 20618, 22204, 23998, 25844, 30317, 41236, 47996, 56303, 60634, 72163, 83993, 112606, 121268, 144326, 167986, 225212, 288652, 335972, 394121, 731939, 788242, 1463878, 1576484, 2927756, 5123573, 10247146, 20494292]

約数ペア:

[(1, 20494292), (2, 10247146), (4, 5123573), (7, 2927756), (13, 1576484), (14, 1463878), (26, 788242), (28, 731939), (52, 394121), (61, 335972), (71, 288652), (91, 225212), (122, 167986), (142, 144326), (169, 121268), (182, 112606), (244, 83993), (284, 72163), (338, 60634), (364, 56303), (427, 47996), (497, 41236), (676, 30317), (793, 25844), (854, 23998), (923, 22204), (994, 20618), (1183, 17324), (1586, 12922), (1708, 11999), (1846, 11102), (1988, 10309), (2366, 8662), (3172, 6461), (3692, 5551), (4331, 4732)]