21554260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{911}}^1$

素因数の和:953

約数の個数: 72

約数和(自身を含む): 56077056

約数和(自身を除く): 34522796

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 845, 910, 911, 1183, 1690, 1820, 1822, 2366, 3380, 3644, 4555, 4732, 5915, 6377, 9110, 11830, 11843, 12754, 18220, 23660, 23686, 25508, 31885, 47372, 59215, 63770, 82901, 118430, 127540, 153959, 165802, 236860, 307918, 331604, 414505, 615836, 769795, 829010, 1077713, 1539590, 1658020, 2155426, 3079180, 4310852, 5388565, 10777130, 21554260]

約数ペア:

[(1, 21554260), (2, 10777130), (4, 5388565), (5, 4310852), (7, 3079180), (10, 2155426), (13, 1658020), (14, 1539590), (20, 1077713), (26, 829010), (28, 769795), (35, 615836), (52, 414505), (65, 331604), (70, 307918), (91, 236860), (130, 165802), (140, 153959), (169, 127540), (182, 118430), (260, 82901), (338, 63770), (364, 59215), (455, 47372), (676, 31885), (845, 25508), (910, 23686), (911, 23660), (1183, 18220), (1690, 12754), (1820, 11843), (1822, 11830), (2366, 9110), (3380, 6377), (3644, 5915), (4555, 4732)]