81440640

素因数分解:

$2^7\times 3^4\times 5^1\times {\mathrm{1571}}^1$

素因数の和:1602

約数の個数: 160

約数和(自身を含む): 291024360

約数和(自身を除く): 209583720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 384, 405, 432, 480, 540, 576, 640, 648, 720, 810, 864, 960, 1080, 1152, 1296, 1440, 1571, 1620, 1728, 1920, 2160, 2592, 2880, 3142, 3240, 3456, 4320, 4713, 5184, 5760, 6284, 6480, 7855, 8640, 9426, 10368, 12568, 12960, 14139, 15710, 17280, 18852, 23565, 25136, 25920, 28278, 31420, 37704, 42417, 47130, 50272, 51840, 56556, 62840, 70695, 75408, 84834, 94260, 100544, 113112, 125680, 127251, 141390, 150816, 169668, 188520, 201088, 212085, 226224, 251360, 254502, 282780, 301632, 339336, 377040, 424170, 452448, 502720, 509004, 565560, 603264, 636255, 678672, 754080, 848340, 904896, 1005440, 1018008, 1131120, 1272510, 1357344, 1508160, 1696680, 1809792, 2036016, 2262240, 2545020, 2714688, 3016320, 3393360, 4072032, 4524480, 5090040, 5429376, 6786720, 8144064, 9048960, 10180080, 13573440, 16288128, 20360160, 27146880, 40720320, 81440640]

約数ペア:

[(1, 81440640), (2, 40720320), (3, 27146880), (4, 20360160), (5, 16288128), (6, 13573440), (8, 10180080), (9, 9048960), (10, 8144064), (12, 6786720), (15, 5429376), (16, 5090040), (18, 4524480), (20, 4072032), (24, 3393360), (27, 3016320), (30, 2714688), (32, 2545020), (36, 2262240), (40, 2036016), (45, 1809792), (48, 1696680), (54, 1508160), (60, 1357344), (64, 1272510), (72, 1131120), (80, 1018008), (81, 1005440), (90, 904896), (96, 848340), (108, 754080), (120, 678672), (128, 636255), (135, 603264), (144, 565560), (160, 509004), (162, 502720), (180, 452448), (192, 424170), (216, 377040), (240, 339336), (270, 301632), (288, 282780), (320, 254502), (324, 251360), (360, 226224), (384, 212085), (405, 201088), (432, 188520), (480, 169668), (540, 150816), (576, 141390), (640, 127251), (648, 125680), (720, 113112), (810, 100544), (864, 94260), (960, 84834), (1080, 75408), (1152, 70695), (1296, 62840), (1440, 56556), (1571, 51840), (1620, 50272), (1728, 47130), (1920, 42417), (2160, 37704), (2592, 31420), (2880, 28278), (3142, 25920), (3240, 25136), (3456, 23565), (4320, 18852), (4713, 17280), (5184, 15710), (5760, 14139), (6284, 12960), (6480, 12568), (7855, 10368), (8640, 9426)]