205756720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{107}}^1$

素因数の和:219

約数の個数: 120

約数和(自身を含む): 532372176

約数和(自身を除く): 326615456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 107, 130, 172, 208, 214, 215, 260, 344, 428, 430, 520, 535, 559, 688, 856, 860, 1040, 1070, 1118, 1391, 1712, 1720, 1849, 2140, 2236, 2782, 2795, 3440, 3698, 4280, 4472, 4601, 5564, 5590, 6955, 7396, 8560, 8944, 9202, 9245, 11128, 11180, 13910, 14792, 18404, 18490, 22256, 22360, 23005, 24037, 27820, 29584, 36808, 36980, 44720, 46010, 48074, 55640, 59813, 73616, 73960, 92020, 96148, 111280, 119626, 120185, 147920, 184040, 192296, 197843, 239252, 240370, 299065, 368080, 384592, 395686, 478504, 480740, 598130, 791372, 957008, 961480, 989215, 1196260, 1582744, 1922960, 1978430, 2392520, 2571959, 3165488, 3956860, 4785040, 5143918, 7913720, 10287836, 12859795, 15827440, 20575672, 25719590, 41151344, 51439180, 102878360, 205756720]

約数ペア:

[(1, 205756720), (2, 102878360), (4, 51439180), (5, 41151344), (8, 25719590), (10, 20575672), (13, 15827440), (16, 12859795), (20, 10287836), (26, 7913720), (40, 5143918), (43, 4785040), (52, 3956860), (65, 3165488), (80, 2571959), (86, 2392520), (104, 1978430), (107, 1922960), (130, 1582744), (172, 1196260), (208, 989215), (214, 961480), (215, 957008), (260, 791372), (344, 598130), (428, 480740), (430, 478504), (520, 395686), (535, 384592), (559, 368080), (688, 299065), (856, 240370), (860, 239252), (1040, 197843), (1070, 192296), (1118, 184040), (1391, 147920), (1712, 120185), (1720, 119626), (1849, 111280), (2140, 96148), (2236, 92020), (2782, 73960), (2795, 73616), (3440, 59813), (3698, 55640), (4280, 48074), (4472, 46010), (4601, 44720), (5564, 36980), (5590, 36808), (6955, 29584), (7396, 27820), (8560, 24037), (8944, 23005), (9202, 22360), (9245, 22256), (11128, 18490), (11180, 18404), (13910, 14792)]