20686280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1049}}^1$

素因数の和:1106

約数の個数: 64

約数和(自身を含む): 51030000

約数和(自身を除く): 30343720

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 29, 34, 40, 58, 68, 85, 116, 136, 145, 170, 232, 290, 340, 493, 580, 680, 986, 1049, 1160, 1972, 2098, 2465, 3944, 4196, 4930, 5245, 8392, 9860, 10490, 17833, 19720, 20980, 30421, 35666, 41960, 60842, 71332, 89165, 121684, 142664, 152105, 178330, 243368, 304210, 356660, 517157, 608420, 713320, 1034314, 1216840, 2068628, 2585785, 4137256, 5171570, 10343140, 20686280]

約数ペア:

[(1, 20686280), (2, 10343140), (4, 5171570), (5, 4137256), (8, 2585785), (10, 2068628), (17, 1216840), (20, 1034314), (29, 713320), (34, 608420), (40, 517157), (58, 356660), (68, 304210), (85, 243368), (116, 178330), (136, 152105), (145, 142664), (170, 121684), (232, 89165), (290, 71332), (340, 60842), (493, 41960), (580, 35666), (680, 30421), (986, 20980), (1049, 19720), (1160, 17833), (1972, 10490), (2098, 9860), (2465, 8392), (3944, 5245), (4196, 4930)]