21291972

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{10499}}^1$

素因数の和:10532

約数の個数: 36

約数和(自身を含む): 53802000

約数和(自身を除く): 32510028

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 10499, 20998, 31497, 41996, 62994, 125988, 136487, 272974, 409461, 545948, 818922, 1637844, 1774331, 3548662, 5322993, 7097324, 10645986, 21291972]

約数ペア:

[(1, 21291972), (2, 10645986), (3, 7097324), (4, 5322993), (6, 3548662), (12, 1774331), (13, 1637844), (26, 818922), (39, 545948), (52, 409461), (78, 272974), (156, 136487), (169, 125988), (338, 62994), (507, 41996), (676, 31497), (1014, 20998), (2028, 10499)]