21207264

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16993}}^1$

素因数の和:17019

約数の個数: 48

約数和(自身を含む): 59954832

約数和(自身を除く): 38747568

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16993, 33986, 50979, 67972, 101958, 135944, 203916, 220909, 271888, 407832, 441818, 543776, 662727, 815664, 883636, 1325454, 1631328, 1767272, 2650908, 3534544, 5301816, 7069088, 10603632, 21207264]

約数ペア:

[(1, 21207264), (2, 10603632), (3, 7069088), (4, 5301816), (6, 3534544), (8, 2650908), (12, 1767272), (13, 1631328), (16, 1325454), (24, 883636), (26, 815664), (32, 662727), (39, 543776), (48, 441818), (52, 407832), (78, 271888), (96, 220909), (104, 203916), (156, 135944), (208, 101958), (312, 67972), (416, 50979), (624, 33986), (1248, 16993)]