31920480

素因数分解:

$2^5\times 3^5\times 5^1\times {\mathrm{821}}^1$

素因数の和:851

約数の個数: 144

約数和(自身を含む): 113100624

約数和(自身を除く): 81180144

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, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 243, 270, 288, 324, 360, 405, 432, 480, 486, 540, 648, 720, 810, 821, 864, 972, 1080, 1215, 1296, 1440, 1620, 1642, 1944, 2160, 2430, 2463, 2592, 3240, 3284, 3888, 4105, 4320, 4860, 4926, 6480, 6568, 7389, 7776, 8210, 9720, 9852, 12315, 12960, 13136, 14778, 16420, 19440, 19704, 22167, 24630, 26272, 29556, 32840, 36945, 38880, 39408, 44334, 49260, 59112, 65680, 66501, 73890, 78816, 88668, 98520, 110835, 118224, 131360, 133002, 147780, 177336, 197040, 199503, 221670, 236448, 266004, 295560, 332505, 354672, 394080, 399006, 443340, 532008, 591120, 665010, 709344, 798012, 886680, 997515, 1064016, 1182240, 1330020, 1596024, 1773360, 1995030, 2128032, 2660040, 3192048, 3546720, 3990060, 5320080, 6384096, 7980120, 10640160, 15960240, 31920480]

約数ペア:

[(1, 31920480), (2, 15960240), (3, 10640160), (4, 7980120), (5, 6384096), (6, 5320080), (8, 3990060), (9, 3546720), (10, 3192048), (12, 2660040), (15, 2128032), (16, 1995030), (18, 1773360), (20, 1596024), (24, 1330020), (27, 1182240), (30, 1064016), (32, 997515), (36, 886680), (40, 798012), (45, 709344), (48, 665010), (54, 591120), (60, 532008), (72, 443340), (80, 399006), (81, 394080), (90, 354672), (96, 332505), (108, 295560), (120, 266004), (135, 236448), (144, 221670), (160, 199503), (162, 197040), (180, 177336), (216, 147780), (240, 133002), (243, 131360), (270, 118224), (288, 110835), (324, 98520), (360, 88668), (405, 78816), (432, 73890), (480, 66501), (486, 65680), (540, 59112), (648, 49260), (720, 44334), (810, 39408), (821, 38880), (864, 36945), (972, 32840), (1080, 29556), (1215, 26272), (1296, 24630), (1440, 22167), (1620, 19704), (1642, 19440), (1944, 16420), (2160, 14778), (2430, 13136), (2463, 12960), (2592, 12315), (3240, 9852), (3284, 9720), (3888, 8210), (4105, 7776), (4320, 7389), (4860, 6568), (4926, 6480)]