20974720900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{3761}}^1$

素因数の和:4070

約数の個数: 144

約数和(自身を含む): 53918548992

約数和(自身を除く): 32943828092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 257, 310, 350, 434, 514, 620, 700, 775, 868, 1028, 1085, 1285, 1550, 1799, 2170, 2570, 3100, 3598, 3761, 4340, 5140, 5425, 6425, 7196, 7522, 7967, 8995, 10850, 12850, 15044, 15934, 17990, 18805, 21700, 25700, 26327, 31868, 35980, 37610, 39835, 44975, 52654, 55769, 75220, 79670, 89950, 94025, 105308, 111538, 116591, 131635, 159340, 179900, 188050, 199175, 223076, 233182, 263270, 278845, 376100, 398350, 466364, 526540, 557690, 582955, 658175, 796700, 816137, 966577, 1115380, 1165910, 1316350, 1394225, 1632274, 1933154, 2331820, 2632700, 2788450, 2914775, 3264548, 3866308, 4080685, 4832885, 5576900, 5829550, 6766039, 8161370, 9665770, 11659100, 13532078, 16322740, 19331540, 20403425, 24164425, 27064156, 29963887, 33830195, 40806850, 48328850, 59927774, 67660390, 81613700, 96657700, 119855548, 135320780, 149819435, 169150975, 209747209, 299638870, 338301950, 419494418, 599277740, 676603900, 749097175, 838988836, 1048736045, 1498194350, 2097472090, 2996388700, 4194944180, 5243680225, 10487360450, 20974720900]

約数ペア:

[(1, 20974720900), (2, 10487360450), (4, 5243680225), (5, 4194944180), (7, 2996388700), (10, 2097472090), (14, 1498194350), (20, 1048736045), (25, 838988836), (28, 749097175), (31, 676603900), (35, 599277740), (50, 419494418), (62, 338301950), (70, 299638870), (100, 209747209), (124, 169150975), (140, 149819435), (155, 135320780), (175, 119855548), (217, 96657700), (257, 81613700), (310, 67660390), (350, 59927774), (434, 48328850), (514, 40806850), (620, 33830195), (700, 29963887), (775, 27064156), (868, 24164425), (1028, 20403425), (1085, 19331540), (1285, 16322740), (1550, 13532078), (1799, 11659100), (2170, 9665770), (2570, 8161370), (3100, 6766039), (3598, 5829550), (3761, 5576900), (4340, 4832885), (5140, 4080685), (5425, 3866308), (6425, 3264548), (7196, 2914775), (7522, 2788450), (7967, 2632700), (8995, 2331820), (10850, 1933154), (12850, 1632274), (15044, 1394225), (15934, 1316350), (17990, 1165910), (18805, 1115380), (21700, 966577), (25700, 816137), (26327, 796700), (31868, 658175), (35980, 582955), (37610, 557690), (39835, 526540), (44975, 466364), (52654, 398350), (55769, 376100), (75220, 278845), (79670, 263270), (89950, 233182), (94025, 223076), (105308, 199175), (111538, 188050), (116591, 179900), (131635, 159340)]