20749560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{283}}^1$

素因数の和:357

約数の個数: 128

約数和(自身を含む): 68705280

約数和(自身を除く): 47955720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 47, 52, 60, 65, 78, 94, 104, 120, 130, 141, 156, 188, 195, 235, 260, 282, 283, 312, 376, 390, 470, 520, 564, 566, 611, 705, 780, 849, 940, 1128, 1132, 1222, 1410, 1415, 1560, 1698, 1833, 1880, 2264, 2444, 2820, 2830, 3055, 3396, 3666, 3679, 4245, 4888, 5640, 5660, 6110, 6792, 7332, 7358, 8490, 9165, 11037, 11320, 12220, 13301, 14664, 14716, 16980, 18330, 18395, 22074, 24440, 26602, 29432, 33960, 36660, 36790, 39903, 44148, 53204, 55185, 66505, 73320, 73580, 79806, 88296, 106408, 110370, 133010, 147160, 159612, 172913, 199515, 220740, 266020, 319224, 345826, 399030, 441480, 518739, 532040, 691652, 798060, 864565, 1037478, 1383304, 1596120, 1729130, 2074956, 2593695, 3458260, 4149912, 5187390, 6916520, 10374780, 20749560]

約数ペア:

[(1, 20749560), (2, 10374780), (3, 6916520), (4, 5187390), (5, 4149912), (6, 3458260), (8, 2593695), (10, 2074956), (12, 1729130), (13, 1596120), (15, 1383304), (20, 1037478), (24, 864565), (26, 798060), (30, 691652), (39, 532040), (40, 518739), (47, 441480), (52, 399030), (60, 345826), (65, 319224), (78, 266020), (94, 220740), (104, 199515), (120, 172913), (130, 159612), (141, 147160), (156, 133010), (188, 110370), (195, 106408), (235, 88296), (260, 79806), (282, 73580), (283, 73320), (312, 66505), (376, 55185), (390, 53204), (470, 44148), (520, 39903), (564, 36790), (566, 36660), (611, 33960), (705, 29432), (780, 26602), (849, 24440), (940, 22074), (1128, 18395), (1132, 18330), (1222, 16980), (1410, 14716), (1415, 14664), (1560, 13301), (1698, 12220), (1833, 11320), (1880, 11037), (2264, 9165), (2444, 8490), (2820, 7358), (2830, 7332), (3055, 6792), (3396, 6110), (3666, 5660), (3679, 5640), (4245, 4888)]