21031560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:188

約数の個数: 192

約数和(自身を含む): 76826880

約数和(自身を除く): 55795320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 47, 55, 60, 66, 72, 88, 90, 94, 99, 110, 113, 120, 132, 141, 165, 180, 188, 198, 220, 226, 235, 264, 282, 330, 339, 360, 376, 396, 423, 440, 452, 470, 495, 517, 564, 565, 660, 678, 705, 792, 846, 904, 940, 990, 1017, 1034, 1128, 1130, 1243, 1320, 1356, 1410, 1551, 1692, 1695, 1880, 1980, 2034, 2068, 2115, 2260, 2486, 2585, 2712, 2820, 3102, 3384, 3390, 3729, 3960, 4068, 4136, 4230, 4520, 4653, 4972, 5085, 5170, 5311, 5640, 6204, 6215, 6780, 7458, 7755, 8136, 8460, 9306, 9944, 10170, 10340, 10622, 11187, 12408, 12430, 13560, 14916, 15510, 15933, 16920, 18612, 18645, 20340, 20680, 21244, 22374, 23265, 24860, 26555, 29832, 31020, 31866, 37224, 37290, 40680, 42488, 44748, 46530, 47799, 49720, 53110, 55935, 58421, 62040, 63732, 74580, 79665, 89496, 93060, 95598, 106220, 111870, 116842, 127464, 149160, 159330, 175263, 186120, 191196, 212440, 223740, 233684, 238995, 292105, 318660, 350526, 382392, 447480, 467368, 477990, 525789, 584210, 637320, 701052, 876315, 955980, 1051578, 1168420, 1402104, 1752630, 1911960, 2103156, 2336840, 2628945, 3505260, 4206312, 5257890, 7010520, 10515780, 21031560]

約数ペア:

[(1, 21031560), (2, 10515780), (3, 7010520), (4, 5257890), (5, 4206312), (6, 3505260), (8, 2628945), (9, 2336840), (10, 2103156), (11, 1911960), (12, 1752630), (15, 1402104), (18, 1168420), (20, 1051578), (22, 955980), (24, 876315), (30, 701052), (33, 637320), (36, 584210), (40, 525789), (44, 477990), (45, 467368), (47, 447480), (55, 382392), (60, 350526), (66, 318660), (72, 292105), (88, 238995), (90, 233684), (94, 223740), (99, 212440), (110, 191196), (113, 186120), (120, 175263), (132, 159330), (141, 149160), (165, 127464), (180, 116842), (188, 111870), (198, 106220), (220, 95598), (226, 93060), (235, 89496), (264, 79665), (282, 74580), (330, 63732), (339, 62040), (360, 58421), (376, 55935), (396, 53110), (423, 49720), (440, 47799), (452, 46530), (470, 44748), (495, 42488), (517, 40680), (564, 37290), (565, 37224), (660, 31866), (678, 31020), (705, 29832), (792, 26555), (846, 24860), (904, 23265), (940, 22374), (990, 21244), (1017, 20680), (1034, 20340), (1128, 18645), (1130, 18612), (1243, 16920), (1320, 15933), (1356, 15510), (1410, 14916), (1551, 13560), (1692, 12430), (1695, 12408), (1880, 11187), (1980, 10622), (2034, 10340), (2068, 10170), (2115, 9944), (2260, 9306), (2486, 8460), (2585, 8136), (2712, 7755), (2820, 7458), (3102, 6780), (3384, 6215), (3390, 6204), (3729, 5640), (3960, 5311), (4068, 5170), (4136, 5085), (4230, 4972), (4520, 4653)]