21517920

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1$

素因数の和:334

約数の個数: 192

約数和(自身を含む): 80015040

約数和(自身を除く): 58497120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 32, 34, 36, 40, 45, 48, 51, 54, 60, 68, 72, 80, 85, 90, 96, 102, 108, 120, 135, 136, 144, 153, 160, 170, 180, 204, 216, 240, 255, 270, 272, 288, 293, 306, 340, 360, 408, 432, 459, 480, 510, 540, 544, 586, 612, 680, 720, 765, 816, 864, 879, 918, 1020, 1080, 1172, 1224, 1360, 1440, 1465, 1530, 1632, 1758, 1836, 2040, 2160, 2295, 2344, 2448, 2637, 2720, 2930, 3060, 3516, 3672, 4080, 4320, 4395, 4590, 4688, 4896, 4981, 5274, 5860, 6120, 7032, 7344, 7911, 8160, 8790, 9180, 9376, 9962, 10548, 11720, 12240, 13185, 14064, 14688, 14943, 15822, 17580, 18360, 19924, 21096, 23440, 24480, 24905, 26370, 28128, 29886, 31644, 35160, 36720, 39555, 39848, 42192, 44829, 46880, 49810, 52740, 59772, 63288, 70320, 73440, 74715, 79110, 79696, 84384, 89658, 99620, 105480, 119544, 126576, 134487, 140640, 149430, 158220, 159392, 179316, 199240, 210960, 224145, 239088, 253152, 268974, 298860, 316440, 358632, 398480, 421920, 448290, 478176, 537948, 597720, 632880, 672435, 717264, 796960, 896580, 1075896, 1195440, 1265760, 1344870, 1434528, 1793160, 2151792, 2390880, 2689740, 3586320, 4303584, 5379480, 7172640, 10758960, 21517920]

約数ペア:

[(1, 21517920), (2, 10758960), (3, 7172640), (4, 5379480), (5, 4303584), (6, 3586320), (8, 2689740), (9, 2390880), (10, 2151792), (12, 1793160), (15, 1434528), (16, 1344870), (17, 1265760), (18, 1195440), (20, 1075896), (24, 896580), (27, 796960), (30, 717264), (32, 672435), (34, 632880), (36, 597720), (40, 537948), (45, 478176), (48, 448290), (51, 421920), (54, 398480), (60, 358632), (68, 316440), (72, 298860), (80, 268974), (85, 253152), (90, 239088), (96, 224145), (102, 210960), (108, 199240), (120, 179316), (135, 159392), (136, 158220), (144, 149430), (153, 140640), (160, 134487), (170, 126576), (180, 119544), (204, 105480), (216, 99620), (240, 89658), (255, 84384), (270, 79696), (272, 79110), (288, 74715), (293, 73440), (306, 70320), (340, 63288), (360, 59772), (408, 52740), (432, 49810), (459, 46880), (480, 44829), (510, 42192), (540, 39848), (544, 39555), (586, 36720), (612, 35160), (680, 31644), (720, 29886), (765, 28128), (816, 26370), (864, 24905), (879, 24480), (918, 23440), (1020, 21096), (1080, 19924), (1172, 18360), (1224, 17580), (1360, 15822), (1440, 14943), (1465, 14688), (1530, 14064), (1632, 13185), (1758, 12240), (1836, 11720), (2040, 10548), (2160, 9962), (2295, 9376), (2344, 9180), (2448, 8790), (2637, 8160), (2720, 7911), (2930, 7344), (3060, 7032), (3516, 6120), (3672, 5860), (4080, 5274), (4320, 4981), (4395, 4896), (4590, 4688)]