20444047600

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{449}}^1\times {\mathrm{1279}}^1$

素因数の和:1835

約数の個数: 120

約数和(自身を含む): 49818240000

約数和(自身を除く): 29374192400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 178, 200, 356, 400, 445, 449, 712, 890, 898, 1279, 1424, 1780, 1796, 2225, 2245, 2558, 3560, 3592, 4450, 4490, 5116, 6395, 7120, 7184, 8900, 8980, 10232, 11225, 12790, 17800, 17960, 20464, 22450, 25580, 31975, 35600, 35920, 39961, 44900, 51160, 63950, 79922, 89800, 102320, 113831, 127900, 159844, 179600, 199805, 227662, 255800, 319688, 399610, 455324, 511600, 569155, 574271, 639376, 799220, 910648, 999025, 1138310, 1148542, 1598440, 1821296, 1998050, 2276620, 2297084, 2845775, 2871355, 3196880, 3996100, 4553240, 4594168, 5691550, 5742710, 7992200, 9106480, 9188336, 11383100, 11485420, 14356775, 15984400, 22766200, 22970840, 28713550, 45532400, 45941680, 51110119, 57427100, 102220238, 114854200, 204440476, 229708400, 255550595, 408880952, 511101190, 817761904, 1022202380, 1277752975, 2044404760, 2555505950, 4088809520, 5111011900, 10222023800, 20444047600]

約数ペア:

[(1, 20444047600), (2, 10222023800), (4, 5111011900), (5, 4088809520), (8, 2555505950), (10, 2044404760), (16, 1277752975), (20, 1022202380), (25, 817761904), (40, 511101190), (50, 408880952), (80, 255550595), (89, 229708400), (100, 204440476), (178, 114854200), (200, 102220238), (356, 57427100), (400, 51110119), (445, 45941680), (449, 45532400), (712, 28713550), (890, 22970840), (898, 22766200), (1279, 15984400), (1424, 14356775), (1780, 11485420), (1796, 11383100), (2225, 9188336), (2245, 9106480), (2558, 7992200), (3560, 5742710), (3592, 5691550), (4450, 4594168), (4490, 4553240), (5116, 3996100), (6395, 3196880), (7120, 2871355), (7184, 2845775), (8900, 2297084), (8980, 2276620), (10232, 1998050), (11225, 1821296), (12790, 1598440), (17800, 1148542), (17960, 1138310), (20464, 999025), (22450, 910648), (25580, 799220), (31975, 639376), (35600, 574271), (35920, 569155), (39961, 511600), (44900, 455324), (51160, 399610), (63950, 319688), (79922, 255800), (89800, 227662), (102320, 199805), (113831, 179600), (127900, 159844)]