20916664

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 42550200

約数和(自身を除く): 21633536

約数列:

[1, 2, 4, 8, 17, 34, 68, 83, 109, 136, 166, 218, 289, 332, 436, 578, 664, 872, 1156, 1411, 1853, 2312, 2822, 3706, 5644, 7412, 9047, 11288, 14824, 18094, 23987, 31501, 36188, 47974, 63002, 72376, 95948, 126004, 153799, 191896, 252008, 307598, 615196, 1230392, 2614583, 5229166, 10458332, 20916664]

約数ペア:

[(1, 20916664), (2, 10458332), (4, 5229166), (8, 2614583), (17, 1230392), (34, 615196), (68, 307598), (83, 252008), (109, 191896), (136, 153799), (166, 126004), (218, 95948), (289, 72376), (332, 63002), (436, 47974), (578, 36188), (664, 31501), (872, 23987), (1156, 18094), (1411, 14824), (1853, 11288), (2312, 9047), (2822, 7412), (3706, 5644)]