19982160

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2$

素因数の和:91

約数の個数: 240

約数和(自身を含む): 77762880

約数和(自身を除く): 57780720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 29, 30, 33, 36, 40, 44, 45, 48, 54, 55, 58, 60, 66, 72, 80, 87, 88, 90, 99, 108, 110, 116, 120, 132, 135, 144, 145, 165, 174, 176, 180, 198, 216, 220, 232, 240, 261, 264, 270, 290, 297, 319, 330, 348, 360, 396, 432, 435, 440, 464, 495, 522, 528, 540, 580, 594, 638, 660, 696, 720, 783, 792, 841, 870, 880, 957, 990, 1044, 1080, 1160, 1188, 1276, 1305, 1320, 1392, 1485, 1566, 1584, 1595, 1682, 1740, 1914, 1980, 2088, 2160, 2320, 2376, 2523, 2552, 2610, 2640, 2871, 2970, 3132, 3190, 3364, 3480, 3828, 3915, 3960, 4176, 4205, 4752, 4785, 5046, 5104, 5220, 5742, 5940, 6264, 6380, 6728, 6960, 7569, 7656, 7830, 7920, 8410, 8613, 9251, 9570, 10092, 10440, 11484, 11880, 12528, 12615, 12760, 13456, 14355, 15138, 15312, 15660, 16820, 17226, 18502, 19140, 20184, 20880, 22707, 22968, 23760, 25230, 25520, 27753, 28710, 30276, 31320, 33640, 34452, 37004, 37845, 38280, 40368, 43065, 45414, 45936, 46255, 50460, 55506, 57420, 60552, 62640, 67280, 68904, 74008, 75690, 76560, 83259, 86130, 90828, 92510, 100920, 111012, 113535, 114840, 121104, 137808, 138765, 148016, 151380, 166518, 172260, 181656, 185020, 201840, 222024, 227070, 229680, 249777, 277530, 302760, 333036, 344520, 363312, 370040, 416295, 444048, 454140, 499554, 555060, 605520, 666072, 689040, 740080, 832590, 908280, 999108, 1110120, 1248885, 1332144, 1665180, 1816560, 1998216, 2220240, 2497770, 3330360, 3996432, 4995540, 6660720, 9991080, 19982160]

約数ペア:

[(1, 19982160), (2, 9991080), (3, 6660720), (4, 4995540), (5, 3996432), (6, 3330360), (8, 2497770), (9, 2220240), (10, 1998216), (11, 1816560), (12, 1665180), (15, 1332144), (16, 1248885), (18, 1110120), (20, 999108), (22, 908280), (24, 832590), (27, 740080), (29, 689040), (30, 666072), (33, 605520), (36, 555060), (40, 499554), (44, 454140), (45, 444048), (48, 416295), (54, 370040), (55, 363312), (58, 344520), (60, 333036), (66, 302760), (72, 277530), (80, 249777), (87, 229680), (88, 227070), (90, 222024), (99, 201840), (108, 185020), (110, 181656), (116, 172260), (120, 166518), (132, 151380), (135, 148016), (144, 138765), (145, 137808), (165, 121104), (174, 114840), (176, 113535), (180, 111012), (198, 100920), (216, 92510), (220, 90828), (232, 86130), (240, 83259), (261, 76560), (264, 75690), (270, 74008), (290, 68904), (297, 67280), (319, 62640), (330, 60552), (348, 57420), (360, 55506), (396, 50460), (432, 46255), (435, 45936), (440, 45414), (464, 43065), (495, 40368), (522, 38280), (528, 37845), (540, 37004), (580, 34452), (594, 33640), (638, 31320), (660, 30276), (696, 28710), (720, 27753), (783, 25520), (792, 25230), (841, 23760), (870, 22968), (880, 22707), (957, 20880), (990, 20184), (1044, 19140), (1080, 18502), (1160, 17226), (1188, 16820), (1276, 15660), (1305, 15312), (1320, 15138), (1392, 14355), (1485, 13456), (1566, 12760), (1584, 12615), (1595, 12528), (1682, 11880), (1740, 11484), (1914, 10440), (1980, 10092), (2088, 9570), (2160, 9251), (2320, 8613), (2376, 8410), (2523, 7920), (2552, 7830), (2610, 7656), (2640, 7569), (2871, 6960), (2970, 6728), (3132, 6380), (3190, 6264), (3364, 5940), (3480, 5742), (3828, 5220), (3915, 5104), (3960, 5046), (4176, 4785), (4205, 4752)]