71818020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{398989}}^1$

素因数の和:399004

約数の個数: 36

約数和(自身を含む): 217848540

約数和(自身を除く): 146030520

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 398989, 797978, 1196967, 1595956, 1994945, 2393934, 3590901, 3989890, 4787868, 5984835, 7181802, 7979780, 11969670, 14363604, 17954505, 23939340, 35909010, 71818020]

約数ペア:

[(1, 71818020), (2, 35909010), (3, 23939340), (4, 17954505), (5, 14363604), (6, 11969670), (9, 7979780), (10, 7181802), (12, 5984835), (15, 4787868), (18, 3989890), (20, 3590901), (30, 2393934), (36, 1994945), (45, 1595956), (60, 1196967), (90, 797978), (180, 398989)]