20777640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{701}}^1$

素因数の和:747

約数の個数: 128

約数和(自身を含む): 70761600

約数和(自身を除く): 49983960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 190, 195, 228, 247, 260, 285, 312, 380, 390, 456, 494, 520, 570, 701, 741, 760, 780, 988, 1140, 1235, 1402, 1482, 1560, 1976, 2103, 2280, 2470, 2804, 2964, 3505, 3705, 4206, 4940, 5608, 5928, 7010, 7410, 8412, 9113, 9880, 10515, 13319, 14020, 14820, 16824, 18226, 21030, 26638, 27339, 28040, 29640, 36452, 39957, 42060, 45565, 53276, 54678, 66595, 72904, 79914, 84120, 91130, 106552, 109356, 133190, 136695, 159828, 173147, 182260, 199785, 218712, 266380, 273390, 319656, 346294, 364520, 399570, 519441, 532760, 546780, 692588, 799140, 865735, 1038882, 1093560, 1385176, 1598280, 1731470, 2077764, 2597205, 3462940, 4155528, 5194410, 6925880, 10388820, 20777640]

約数ペア:

[(1, 20777640), (2, 10388820), (3, 6925880), (4, 5194410), (5, 4155528), (6, 3462940), (8, 2597205), (10, 2077764), (12, 1731470), (13, 1598280), (15, 1385176), (19, 1093560), (20, 1038882), (24, 865735), (26, 799140), (30, 692588), (38, 546780), (39, 532760), (40, 519441), (52, 399570), (57, 364520), (60, 346294), (65, 319656), (76, 273390), (78, 266380), (95, 218712), (104, 199785), (114, 182260), (120, 173147), (130, 159828), (152, 136695), (156, 133190), (190, 109356), (195, 106552), (228, 91130), (247, 84120), (260, 79914), (285, 72904), (312, 66595), (380, 54678), (390, 53276), (456, 45565), (494, 42060), (520, 39957), (570, 36452), (701, 29640), (741, 28040), (760, 27339), (780, 26638), (988, 21030), (1140, 18226), (1235, 16824), (1402, 14820), (1482, 14020), (1560, 13319), (1976, 10515), (2103, 9880), (2280, 9113), (2470, 8412), (2804, 7410), (2964, 7010), (3505, 5928), (3705, 5608), (4206, 4940)]