30781980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:196

約数の個数: 144

約数和(自身を含む): 98882784

約数和(自身を除く): 68100804

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 43, 45, 60, 82, 86, 90, 97, 123, 129, 164, 172, 180, 194, 205, 215, 246, 258, 291, 369, 387, 388, 410, 430, 485, 492, 516, 582, 615, 645, 738, 774, 820, 860, 873, 970, 1164, 1230, 1290, 1455, 1476, 1548, 1746, 1763, 1845, 1935, 1940, 2460, 2580, 2910, 3492, 3526, 3690, 3870, 3977, 4171, 4365, 5289, 5820, 7052, 7380, 7740, 7954, 8342, 8730, 8815, 10578, 11931, 12513, 15867, 15908, 16684, 17460, 17630, 19885, 20855, 21156, 23862, 25026, 26445, 31734, 35260, 35793, 37539, 39770, 41710, 47724, 50052, 52890, 59655, 62565, 63468, 71586, 75078, 79335, 79540, 83420, 105780, 119310, 125130, 143172, 150156, 158670, 171011, 178965, 187695, 238620, 250260, 317340, 342022, 357930, 375390, 513033, 684044, 715860, 750780, 855055, 1026066, 1539099, 1710110, 2052132, 2565165, 3078198, 3420220, 5130330, 6156396, 7695495, 10260660, 15390990, 30781980]

約数ペア:

[(1, 30781980), (2, 15390990), (3, 10260660), (4, 7695495), (5, 6156396), (6, 5130330), (9, 3420220), (10, 3078198), (12, 2565165), (15, 2052132), (18, 1710110), (20, 1539099), (30, 1026066), (36, 855055), (41, 750780), (43, 715860), (45, 684044), (60, 513033), (82, 375390), (86, 357930), (90, 342022), (97, 317340), (123, 250260), (129, 238620), (164, 187695), (172, 178965), (180, 171011), (194, 158670), (205, 150156), (215, 143172), (246, 125130), (258, 119310), (291, 105780), (369, 83420), (387, 79540), (388, 79335), (410, 75078), (430, 71586), (485, 63468), (492, 62565), (516, 59655), (582, 52890), (615, 50052), (645, 47724), (738, 41710), (774, 39770), (820, 37539), (860, 35793), (873, 35260), (970, 31734), (1164, 26445), (1230, 25026), (1290, 23862), (1455, 21156), (1476, 20855), (1548, 19885), (1746, 17630), (1763, 17460), (1845, 16684), (1935, 15908), (1940, 15867), (2460, 12513), (2580, 11931), (2910, 10578), (3492, 8815), (3526, 8730), (3690, 8342), (3870, 7954), (3977, 7740), (4171, 7380), (4365, 7052), (5289, 5820)]