81554220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41189}}^1$

素因数の和:41215

約数の個数: 72

約数和(自身を含む): 269876880

約数和(自身を除く): 188322660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41189, 82378, 123567, 164756, 205945, 247134, 370701, 411890, 453079, 494268, 617835, 741402, 823780, 906158, 1235670, 1359237, 1482804, 1812316, 1853505, 2265395, 2471340, 2718474, 3707010, 4077711, 4530790, 5436948, 6796185, 7414020, 8155422, 9061580, 13592370, 16310844, 20388555, 27184740, 40777110, 81554220]

約数ペア:

[(1, 81554220), (2, 40777110), (3, 27184740), (4, 20388555), (5, 16310844), (6, 13592370), (9, 9061580), (10, 8155422), (11, 7414020), (12, 6796185), (15, 5436948), (18, 4530790), (20, 4077711), (22, 3707010), (30, 2718474), (33, 2471340), (36, 2265395), (44, 1853505), (45, 1812316), (55, 1482804), (60, 1359237), (66, 1235670), (90, 906158), (99, 823780), (110, 741402), (132, 617835), (165, 494268), (180, 453079), (198, 411890), (220, 370701), (330, 247134), (396, 205945), (495, 164756), (660, 123567), (990, 82378), (1980, 41189)]