21699720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:212

約数の個数: 192

約数和(自身を含む): 82368000

約数和(自身を除く): 60668280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 79, 84, 90, 105, 109, 120, 126, 140, 158, 168, 180, 210, 218, 237, 252, 280, 315, 316, 327, 360, 395, 420, 436, 474, 504, 545, 553, 630, 632, 654, 711, 763, 790, 840, 872, 948, 981, 1090, 1106, 1185, 1260, 1308, 1422, 1526, 1580, 1635, 1659, 1896, 1962, 2180, 2212, 2289, 2370, 2520, 2616, 2765, 2844, 3052, 3160, 3270, 3318, 3555, 3815, 3924, 4360, 4424, 4578, 4740, 4905, 4977, 5530, 5688, 6104, 6540, 6636, 6867, 7110, 7630, 7848, 8295, 8611, 9156, 9480, 9810, 9954, 11060, 11445, 13080, 13272, 13734, 14220, 15260, 16590, 17222, 18312, 19620, 19908, 22120, 22890, 24885, 25833, 27468, 28440, 30520, 33180, 34335, 34444, 39240, 39816, 43055, 45780, 49770, 51666, 54936, 60277, 66360, 68670, 68888, 77499, 86110, 91560, 99540, 103332, 120554, 129165, 137340, 154998, 172220, 180831, 199080, 206664, 241108, 258330, 274680, 301385, 309996, 344440, 361662, 387495, 482216, 516660, 542493, 602770, 619992, 723324, 774990, 904155, 1033320, 1084986, 1205540, 1446648, 1549980, 1808310, 2169972, 2411080, 2712465, 3099960, 3616620, 4339944, 5424930, 7233240, 10849860, 21699720]

約数ペア:

[(1, 21699720), (2, 10849860), (3, 7233240), (4, 5424930), (5, 4339944), (6, 3616620), (7, 3099960), (8, 2712465), (9, 2411080), (10, 2169972), (12, 1808310), (14, 1549980), (15, 1446648), (18, 1205540), (20, 1084986), (21, 1033320), (24, 904155), (28, 774990), (30, 723324), (35, 619992), (36, 602770), (40, 542493), (42, 516660), (45, 482216), (56, 387495), (60, 361662), (63, 344440), (70, 309996), (72, 301385), (79, 274680), (84, 258330), (90, 241108), (105, 206664), (109, 199080), (120, 180831), (126, 172220), (140, 154998), (158, 137340), (168, 129165), (180, 120554), (210, 103332), (218, 99540), (237, 91560), (252, 86110), (280, 77499), (315, 68888), (316, 68670), (327, 66360), (360, 60277), (395, 54936), (420, 51666), (436, 49770), (474, 45780), (504, 43055), (545, 39816), (553, 39240), (630, 34444), (632, 34335), (654, 33180), (711, 30520), (763, 28440), (790, 27468), (840, 25833), (872, 24885), (948, 22890), (981, 22120), (1090, 19908), (1106, 19620), (1185, 18312), (1260, 17222), (1308, 16590), (1422, 15260), (1526, 14220), (1580, 13734), (1635, 13272), (1659, 13080), (1896, 11445), (1962, 11060), (2180, 9954), (2212, 9810), (2289, 9480), (2370, 9156), (2520, 8611), (2616, 8295), (2765, 7848), (2844, 7630), (3052, 7110), (3160, 6867), (3270, 6636), (3318, 6540), (3555, 6104), (3815, 5688), (3924, 5530), (4360, 4977), (4424, 4905), (4578, 4740)]