81651840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^2$

素因数の和:131

約数の個数: 192

約数和(自身を含む): 278043840

約数和(自身を除く): 196392000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 43, 46, 48, 60, 64, 69, 80, 86, 92, 96, 115, 120, 128, 129, 138, 160, 172, 184, 192, 215, 230, 240, 258, 276, 320, 344, 345, 368, 384, 430, 460, 480, 516, 552, 640, 645, 688, 690, 736, 860, 920, 960, 989, 1032, 1104, 1290, 1376, 1380, 1472, 1720, 1840, 1849, 1920, 1978, 2064, 2208, 2580, 2752, 2760, 2944, 2967, 3440, 3680, 3698, 3956, 4128, 4416, 4945, 5160, 5504, 5520, 5547, 5934, 6880, 7360, 7396, 7912, 8256, 8832, 9245, 9890, 10320, 11040, 11094, 11868, 13760, 14720, 14792, 14835, 15824, 16512, 18490, 19780, 20640, 22080, 22188, 23736, 27520, 27735, 29584, 29670, 31648, 36980, 39560, 41280, 42527, 44160, 44376, 47472, 55470, 59168, 59340, 63296, 73960, 79120, 82560, 85054, 88752, 94944, 110940, 118336, 118680, 126592, 127581, 147920, 158240, 170108, 177504, 189888, 212635, 221880, 236672, 237360, 255162, 295840, 316480, 340216, 355008, 379776, 425270, 443760, 474720, 510324, 591680, 632960, 637905, 680432, 710016, 850540, 887520, 949440, 1020648, 1183360, 1275810, 1360864, 1701080, 1775040, 1898880, 2041296, 2551620, 2721728, 3402160, 3550080, 4082592, 5103240, 5443456, 6804320, 8165184, 10206480, 13608640, 16330368, 20412960, 27217280, 40825920, 81651840]

約数ペア:

[(1, 81651840), (2, 40825920), (3, 27217280), (4, 20412960), (5, 16330368), (6, 13608640), (8, 10206480), (10, 8165184), (12, 6804320), (15, 5443456), (16, 5103240), (20, 4082592), (23, 3550080), (24, 3402160), (30, 2721728), (32, 2551620), (40, 2041296), (43, 1898880), (46, 1775040), (48, 1701080), (60, 1360864), (64, 1275810), (69, 1183360), (80, 1020648), (86, 949440), (92, 887520), (96, 850540), (115, 710016), (120, 680432), (128, 637905), (129, 632960), (138, 591680), (160, 510324), (172, 474720), (184, 443760), (192, 425270), (215, 379776), (230, 355008), (240, 340216), (258, 316480), (276, 295840), (320, 255162), (344, 237360), (345, 236672), (368, 221880), (384, 212635), (430, 189888), (460, 177504), (480, 170108), (516, 158240), (552, 147920), (640, 127581), (645, 126592), (688, 118680), (690, 118336), (736, 110940), (860, 94944), (920, 88752), (960, 85054), (989, 82560), (1032, 79120), (1104, 73960), (1290, 63296), (1376, 59340), (1380, 59168), (1472, 55470), (1720, 47472), (1840, 44376), (1849, 44160), (1920, 42527), (1978, 41280), (2064, 39560), (2208, 36980), (2580, 31648), (2752, 29670), (2760, 29584), (2944, 27735), (2967, 27520), (3440, 23736), (3680, 22188), (3698, 22080), (3956, 20640), (4128, 19780), (4416, 18490), (4945, 16512), (5160, 15824), (5504, 14835), (5520, 14792), (5547, 14720), (5934, 13760), (6880, 11868), (7360, 11094), (7396, 11040), (7912, 10320), (8256, 9890), (8832, 9245)]