19904937584

素因数分解:

$2^4\times 7^3\times {\mathrm{127}}^1\times {\mathrm{28559}}^1$

素因数の和:28715

約数の個数: 80

約数和(自身を含む): 45330432000

約数和(自身を除く): 25425494416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 127, 196, 254, 343, 392, 508, 686, 784, 889, 1016, 1372, 1778, 2032, 2744, 3556, 5488, 6223, 7112, 12446, 14224, 24892, 28559, 43561, 49784, 57118, 87122, 99568, 114236, 174244, 199913, 228472, 348488, 399826, 456944, 696976, 799652, 1399391, 1599304, 2798782, 3198608, 3626993, 5597564, 7253986, 9795737, 11195128, 14507972, 19591474, 22390256, 25388951, 29015944, 39182948, 50777902, 58031888, 78365896, 101555804, 156731792, 177722657, 203111608, 355445314, 406223216, 710890628, 1244058599, 1421781256, 2488117198, 2843562512, 4976234396, 9952468792, 19904937584]

約数ペア:

[(1, 19904937584), (2, 9952468792), (4, 4976234396), (7, 2843562512), (8, 2488117198), (14, 1421781256), (16, 1244058599), (28, 710890628), (49, 406223216), (56, 355445314), (98, 203111608), (112, 177722657), (127, 156731792), (196, 101555804), (254, 78365896), (343, 58031888), (392, 50777902), (508, 39182948), (686, 29015944), (784, 25388951), (889, 22390256), (1016, 19591474), (1372, 14507972), (1778, 11195128), (2032, 9795737), (2744, 7253986), (3556, 5597564), (5488, 3626993), (6223, 3198608), (7112, 2798782), (12446, 1599304), (14224, 1399391), (24892, 799652), (28559, 696976), (43561, 456944), (49784, 399826), (57118, 348488), (87122, 228472), (99568, 199913), (114236, 174244)]