19917180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110651}}^1$

素因数の和:110666

約数の個数: 36

約数和(自身を含む): 60415992

約数和(自身を除く): 40498812

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110651, 221302, 331953, 442604, 553255, 663906, 995859, 1106510, 1327812, 1659765, 1991718, 2213020, 3319530, 3983436, 4979295, 6639060, 9958590, 19917180]

約数ペア:

[(1, 19917180), (2, 9958590), (3, 6639060), (4, 4979295), (5, 3983436), (6, 3319530), (9, 2213020), (10, 1991718), (12, 1659765), (15, 1327812), (18, 1106510), (20, 995859), (30, 663906), (36, 553255), (45, 442604), (60, 331953), (90, 221302), (180, 110651)]