81324620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{653}}^1$

素因数の和:1154

約数の個数: 48

約数和(自身を含む): 184584960

約数和(自身を除く): 103260340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 479, 653, 958, 1306, 1916, 2395, 2612, 3265, 4790, 6227, 6530, 8489, 9580, 12454, 13060, 16978, 24908, 31135, 33956, 42445, 62270, 84890, 124540, 169780, 312787, 625574, 1251148, 1563935, 3127870, 4066231, 6255740, 8132462, 16264924, 20331155, 40662310, 81324620]

約数ペア:

[(1, 81324620), (2, 40662310), (4, 20331155), (5, 16264924), (10, 8132462), (13, 6255740), (20, 4066231), (26, 3127870), (52, 1563935), (65, 1251148), (130, 625574), (260, 312787), (479, 169780), (653, 124540), (958, 84890), (1306, 62270), (1916, 42445), (2395, 33956), (2612, 31135), (3265, 24908), (4790, 16978), (6227, 13060), (6530, 12454), (8489, 9580)]