21680280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{60223}}^1$

素因数の和:60240

約数の個数: 48

約数和(自身を含む): 70462080

約数和(自身を除く): 48781800

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, 60223, 120446, 180669, 240892, 301115, 361338, 481784, 542007, 602230, 722676, 903345, 1084014, 1204460, 1445352, 1806690, 2168028, 2408920, 2710035, 3613380, 4336056, 5420070, 7226760, 10840140, 21680280]

約数ペア:

[(1, 21680280), (2, 10840140), (3, 7226760), (4, 5420070), (5, 4336056), (6, 3613380), (8, 2710035), (9, 2408920), (10, 2168028), (12, 1806690), (15, 1445352), (18, 1204460), (20, 1084014), (24, 903345), (30, 722676), (36, 602230), (40, 542007), (45, 481784), (60, 361338), (72, 301115), (90, 240892), (120, 180669), (180, 120446), (360, 60223)]