21090540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:112

約数の個数: 192

約数和(自身を含む): 69672960

約数和(自身を除く): 48582420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 29, 30, 31, 34, 46, 51, 58, 60, 62, 68, 69, 85, 87, 92, 93, 102, 115, 116, 124, 138, 145, 155, 170, 174, 186, 204, 230, 255, 276, 290, 310, 340, 345, 348, 372, 391, 435, 460, 465, 493, 510, 527, 580, 620, 667, 690, 713, 782, 870, 899, 930, 986, 1020, 1054, 1173, 1334, 1380, 1426, 1479, 1564, 1581, 1740, 1798, 1860, 1955, 1972, 2001, 2108, 2139, 2346, 2465, 2635, 2668, 2697, 2852, 2958, 3162, 3335, 3565, 3596, 3910, 4002, 4278, 4495, 4692, 4930, 5270, 5394, 5865, 5916, 6324, 6670, 7130, 7395, 7820, 7905, 8004, 8556, 8990, 9860, 10005, 10540, 10695, 10788, 11339, 11730, 12121, 13340, 13485, 14260, 14790, 15283, 15810, 17980, 20010, 20677, 21390, 22678, 23460, 24242, 26970, 29580, 30566, 31620, 34017, 36363, 40020, 41354, 42780, 45356, 45849, 48484, 53940, 56695, 60605, 61132, 62031, 68034, 72726, 76415, 82708, 91698, 103385, 113390, 121210, 124062, 136068, 145452, 152830, 170085, 181815, 183396, 206770, 226780, 229245, 242420, 248124, 305660, 310155, 340170, 351509, 363630, 413540, 458490, 620310, 680340, 703018, 727260, 916980, 1054527, 1240620, 1406036, 1757545, 2109054, 3515090, 4218108, 5272635, 7030180, 10545270, 21090540]

約数ペア:

[(1, 21090540), (2, 10545270), (3, 7030180), (4, 5272635), (5, 4218108), (6, 3515090), (10, 2109054), (12, 1757545), (15, 1406036), (17, 1240620), (20, 1054527), (23, 916980), (29, 727260), (30, 703018), (31, 680340), (34, 620310), (46, 458490), (51, 413540), (58, 363630), (60, 351509), (62, 340170), (68, 310155), (69, 305660), (85, 248124), (87, 242420), (92, 229245), (93, 226780), (102, 206770), (115, 183396), (116, 181815), (124, 170085), (138, 152830), (145, 145452), (155, 136068), (170, 124062), (174, 121210), (186, 113390), (204, 103385), (230, 91698), (255, 82708), (276, 76415), (290, 72726), (310, 68034), (340, 62031), (345, 61132), (348, 60605), (372, 56695), (391, 53940), (435, 48484), (460, 45849), (465, 45356), (493, 42780), (510, 41354), (527, 40020), (580, 36363), (620, 34017), (667, 31620), (690, 30566), (713, 29580), (782, 26970), (870, 24242), (899, 23460), (930, 22678), (986, 21390), (1020, 20677), (1054, 20010), (1173, 17980), (1334, 15810), (1380, 15283), (1426, 14790), (1479, 14260), (1564, 13485), (1581, 13340), (1740, 12121), (1798, 11730), (1860, 11339), (1955, 10788), (1972, 10695), (2001, 10540), (2108, 10005), (2139, 9860), (2346, 8990), (2465, 8556), (2635, 8004), (2668, 7905), (2697, 7820), (2852, 7395), (2958, 7130), (3162, 6670), (3335, 6324), (3565, 5916), (3596, 5865), (3910, 5394), (4002, 5270), (4278, 4930), (4495, 4692)]