21101760

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1$

素因数の和:471

約数の個数: 168

約数和(自身を含む): 77029056

約数和(自身を除く): 55927296

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 64, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 192, 204, 240, 255, 272, 288, 306, 320, 340, 360, 408, 431, 480, 510, 544, 576, 612, 680, 720, 765, 816, 862, 960, 1020, 1088, 1224, 1293, 1360, 1440, 1530, 1632, 1724, 2040, 2155, 2448, 2586, 2720, 2880, 3060, 3264, 3448, 3879, 4080, 4310, 4896, 5172, 5440, 6120, 6465, 6896, 7327, 7758, 8160, 8620, 9792, 10344, 12240, 12930, 13792, 14654, 15516, 16320, 17240, 19395, 20688, 21981, 24480, 25860, 27584, 29308, 31032, 34480, 36635, 38790, 41376, 43962, 48960, 51720, 58616, 62064, 65943, 68960, 73270, 77580, 82752, 87924, 103440, 109905, 117232, 124128, 131886, 137920, 146540, 155160, 175848, 206880, 219810, 234464, 248256, 263772, 293080, 310320, 329715, 351696, 413760, 439620, 468928, 527544, 586160, 620640, 659430, 703392, 879240, 1055088, 1172320, 1241280, 1318860, 1406784, 1758480, 2110176, 2344640, 2637720, 3516960, 4220352, 5275440, 7033920, 10550880, 21101760]

約数ペア:

[(1, 21101760), (2, 10550880), (3, 7033920), (4, 5275440), (5, 4220352), (6, 3516960), (8, 2637720), (9, 2344640), (10, 2110176), (12, 1758480), (15, 1406784), (16, 1318860), (17, 1241280), (18, 1172320), (20, 1055088), (24, 879240), (30, 703392), (32, 659430), (34, 620640), (36, 586160), (40, 527544), (45, 468928), (48, 439620), (51, 413760), (60, 351696), (64, 329715), (68, 310320), (72, 293080), (80, 263772), (85, 248256), (90, 234464), (96, 219810), (102, 206880), (120, 175848), (136, 155160), (144, 146540), (153, 137920), (160, 131886), (170, 124128), (180, 117232), (192, 109905), (204, 103440), (240, 87924), (255, 82752), (272, 77580), (288, 73270), (306, 68960), (320, 65943), (340, 62064), (360, 58616), (408, 51720), (431, 48960), (480, 43962), (510, 41376), (544, 38790), (576, 36635), (612, 34480), (680, 31032), (720, 29308), (765, 27584), (816, 25860), (862, 24480), (960, 21981), (1020, 20688), (1088, 19395), (1224, 17240), (1293, 16320), (1360, 15516), (1440, 14654), (1530, 13792), (1632, 12930), (1724, 12240), (2040, 10344), (2155, 9792), (2448, 8620), (2586, 8160), (2720, 7758), (2880, 7327), (3060, 6896), (3264, 6465), (3448, 6120), (3879, 5440), (4080, 5172), (4310, 4896)]