78789620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43291}}^1$

素因数の和:43320

約数の個数: 48

約数和(自身を含む): 203645568

約数和(自身を除く): 124855948

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 43291, 86582, 173164, 216455, 303037, 432910, 562783, 606074, 865820, 1125566, 1212148, 1515185, 2251132, 2813915, 3030370, 3939481, 5627830, 6060740, 7878962, 11255660, 15757924, 19697405, 39394810, 78789620]

約数ペア:

[(1, 78789620), (2, 39394810), (4, 19697405), (5, 15757924), (7, 11255660), (10, 7878962), (13, 6060740), (14, 5627830), (20, 3939481), (26, 3030370), (28, 2813915), (35, 2251132), (52, 1515185), (65, 1212148), (70, 1125566), (91, 865820), (130, 606074), (140, 562783), (182, 432910), (260, 303037), (364, 216455), (455, 173164), (910, 86582), (1820, 43291)]