640790520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{314113}}^1$

素因数の和:314144

約数の個数: 64

約数和(自身を含む): 2035458720

約数和(自身を除く): 1394668200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 314113, 628226, 942339, 1256452, 1570565, 1884678, 2512904, 3141130, 3769356, 4711695, 5339921, 6282260, 7538712, 9423390, 10679842, 12564520, 16019763, 18846780, 21359684, 26699605, 32039526, 37693560, 42719368, 53399210, 64079052, 80098815, 106798420, 128158104, 160197630, 213596840, 320395260, 640790520]

約数ペア:

[(1, 640790520), (2, 320395260), (3, 213596840), (4, 160197630), (5, 128158104), (6, 106798420), (8, 80098815), (10, 64079052), (12, 53399210), (15, 42719368), (17, 37693560), (20, 32039526), (24, 26699605), (30, 21359684), (34, 18846780), (40, 16019763), (51, 12564520), (60, 10679842), (68, 9423390), (85, 7538712), (102, 6282260), (120, 5339921), (136, 4711695), (170, 3769356), (204, 3141130), (255, 2512904), (340, 1884678), (408, 1570565), (510, 1256452), (680, 942339), (1020, 628226), (2040, 314113)]