21519888

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{34487}}^1$

素因数の和:34511

約数の個数: 40

約数和(自身を含む): 59871168

約数和(自身を除く): 38351280

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 34487, 68974, 103461, 137948, 206922, 275896, 413844, 448331, 551792, 827688, 896662, 1344993, 1655376, 1793324, 2689986, 3586648, 5379972, 7173296, 10759944, 21519888]

約数ペア:

[(1, 21519888), (2, 10759944), (3, 7173296), (4, 5379972), (6, 3586648), (8, 2689986), (12, 1793324), (13, 1655376), (16, 1344993), (24, 896662), (26, 827688), (39, 551792), (48, 448331), (52, 413844), (78, 275896), (104, 206922), (156, 137948), (208, 103461), (312, 68974), (624, 34487)]