19984680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1291}}^1$

素因数の和:1351

約数の個数: 96

約数和(自身を含む): 66512160

約数和(自身を除く): 46527480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 43, 45, 60, 72, 86, 90, 120, 129, 172, 180, 215, 258, 344, 360, 387, 430, 516, 645, 774, 860, 1032, 1290, 1291, 1548, 1720, 1935, 2580, 2582, 3096, 3870, 3873, 5160, 5164, 6455, 7740, 7746, 10328, 11619, 12910, 15480, 15492, 19365, 23238, 25820, 30984, 38730, 46476, 51640, 55513, 58095, 77460, 92952, 111026, 116190, 154920, 166539, 222052, 232380, 277565, 333078, 444104, 464760, 499617, 555130, 666156, 832695, 999234, 1110260, 1332312, 1665390, 1998468, 2220520, 2498085, 3330780, 3996936, 4996170, 6661560, 9992340, 19984680]

約数ペア:

[(1, 19984680), (2, 9992340), (3, 6661560), (4, 4996170), (5, 3996936), (6, 3330780), (8, 2498085), (9, 2220520), (10, 1998468), (12, 1665390), (15, 1332312), (18, 1110260), (20, 999234), (24, 832695), (30, 666156), (36, 555130), (40, 499617), (43, 464760), (45, 444104), (60, 333078), (72, 277565), (86, 232380), (90, 222052), (120, 166539), (129, 154920), (172, 116190), (180, 111026), (215, 92952), (258, 77460), (344, 58095), (360, 55513), (387, 51640), (430, 46476), (516, 38730), (645, 30984), (774, 25820), (860, 23238), (1032, 19365), (1290, 15492), (1291, 15480), (1548, 12910), (1720, 11619), (1935, 10328), (2580, 7746), (2582, 7740), (3096, 6455), (3870, 5164), (3873, 5160)]