19980360

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55501}}^1$

素因数の和:55518

約数の個数: 48

約数和(自身を含む): 64937340

約数和(自身を除く): 44956980

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55501, 111002, 166503, 222004, 277505, 333006, 444008, 499509, 555010, 666012, 832515, 999018, 1110020, 1332024, 1665030, 1998036, 2220040, 2497545, 3330060, 3996072, 4995090, 6660120, 9990180, 19980360]

約数ペア:

[(1, 19980360), (2, 9990180), (3, 6660120), (4, 4995090), (5, 3996072), (6, 3330060), (8, 2497545), (9, 2220040), (10, 1998036), (12, 1665030), (15, 1332024), (18, 1110020), (20, 999018), (24, 832515), (30, 666012), (36, 555010), (40, 499509), (45, 444008), (60, 333006), (72, 277505), (90, 222004), (120, 166503), (180, 111002), (360, 55501)]