20984340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26903}}^1$

素因数の和:26928

約数の個数: 48

約数和(自身を含む): 63278208

約数和(自身を除く): 42293868

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26903, 53806, 80709, 107612, 134515, 161418, 269030, 322836, 349739, 403545, 538060, 699478, 807090, 1049217, 1398956, 1614180, 1748695, 2098434, 3497390, 4196868, 5246085, 6994780, 10492170, 20984340]

約数ペア:

[(1, 20984340), (2, 10492170), (3, 6994780), (4, 5246085), (5, 4196868), (6, 3497390), (10, 2098434), (12, 1748695), (13, 1614180), (15, 1398956), (20, 1049217), (26, 807090), (30, 699478), (39, 538060), (52, 403545), (60, 349739), (65, 322836), (78, 269030), (130, 161418), (156, 134515), (195, 107612), (260, 80709), (390, 53806), (780, 26903)]