78278220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1009}}^1$

素因数の和:1455

約数の個数: 72

約数和(自身を含む): 238230720

約数和(自身を除く): 159952500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 431, 862, 1009, 1293, 1724, 2018, 2155, 2586, 3027, 3879, 4036, 4310, 5045, 5172, 6054, 6465, 7758, 8620, 9081, 10090, 12108, 12930, 15135, 15516, 18162, 19395, 20180, 25860, 30270, 36324, 38790, 45405, 60540, 77580, 90810, 181620, 434879, 869758, 1304637, 1739516, 2174395, 2609274, 3913911, 4348790, 5218548, 6523185, 7827822, 8697580, 13046370, 15655644, 19569555, 26092740, 39139110, 78278220]

約数ペア:

[(1, 78278220), (2, 39139110), (3, 26092740), (4, 19569555), (5, 15655644), (6, 13046370), (9, 8697580), (10, 7827822), (12, 6523185), (15, 5218548), (18, 4348790), (20, 3913911), (30, 2609274), (36, 2174395), (45, 1739516), (60, 1304637), (90, 869758), (180, 434879), (431, 181620), (862, 90810), (1009, 77580), (1293, 60540), (1724, 45405), (2018, 38790), (2155, 36324), (2586, 30270), (3027, 25860), (3879, 20180), (4036, 19395), (4310, 18162), (5045, 15516), (5172, 15135), (6054, 12930), (6465, 12108), (7758, 10090), (8620, 9081)]