20216880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{653}}^1$

素因数の和:715

約数の個数: 120

約数和(自身を含む): 69580368

約数和(自身を除く): 49363488

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 120, 129, 144, 172, 180, 215, 240, 258, 344, 360, 387, 430, 516, 645, 653, 688, 720, 774, 860, 1032, 1290, 1306, 1548, 1720, 1935, 1959, 2064, 2580, 2612, 3096, 3265, 3440, 3870, 3918, 5160, 5224, 5877, 6192, 6530, 7740, 7836, 9795, 10320, 10448, 11754, 13060, 15480, 15672, 19590, 23508, 26120, 28079, 29385, 30960, 31344, 39180, 47016, 52240, 56158, 58770, 78360, 84237, 94032, 112316, 117540, 140395, 156720, 168474, 224632, 235080, 252711, 280790, 336948, 421185, 449264, 470160, 505422, 561580, 673896, 842370, 1010844, 1123160, 1263555, 1347792, 1684740, 2021688, 2246320, 2527110, 3369480, 4043376, 5054220, 6738960, 10108440, 20216880]

約数ペア:

[(1, 20216880), (2, 10108440), (3, 6738960), (4, 5054220), (5, 4043376), (6, 3369480), (8, 2527110), (9, 2246320), (10, 2021688), (12, 1684740), (15, 1347792), (16, 1263555), (18, 1123160), (20, 1010844), (24, 842370), (30, 673896), (36, 561580), (40, 505422), (43, 470160), (45, 449264), (48, 421185), (60, 336948), (72, 280790), (80, 252711), (86, 235080), (90, 224632), (120, 168474), (129, 156720), (144, 140395), (172, 117540), (180, 112316), (215, 94032), (240, 84237), (258, 78360), (344, 58770), (360, 56158), (387, 52240), (430, 47016), (516, 39180), (645, 31344), (653, 30960), (688, 29385), (720, 28079), (774, 26120), (860, 23508), (1032, 19590), (1290, 15672), (1306, 15480), (1548, 13060), (1720, 11754), (1935, 10448), (1959, 10320), (2064, 9795), (2580, 7836), (2612, 7740), (3096, 6530), (3265, 6192), (3440, 5877), (3870, 5224), (3918, 5160)]