17881376840

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{15907}}^1$

素因数の和:16254

約数の個数: 64

約数和(自身を含む): 40718116800

約数和(自身を除く): 22836739960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 179, 314, 358, 628, 716, 785, 895, 1256, 1432, 1570, 1790, 3140, 3580, 6280, 7160, 15907, 28103, 31814, 56206, 63628, 79535, 112412, 127256, 140515, 159070, 224824, 281030, 318140, 562060, 636280, 1124120, 2497399, 2847353, 4994798, 5694706, 9989596, 11389412, 12486995, 14236765, 19979192, 22778824, 24973990, 28473530, 49947980, 56947060, 99895960, 113894120, 447034421, 894068842, 1788137684, 2235172105, 3576275368, 4470344210, 8940688420, 17881376840]

約数ペア:

[(1, 17881376840), (2, 8940688420), (4, 4470344210), (5, 3576275368), (8, 2235172105), (10, 1788137684), (20, 894068842), (40, 447034421), (157, 113894120), (179, 99895960), (314, 56947060), (358, 49947980), (628, 28473530), (716, 24973990), (785, 22778824), (895, 19979192), (1256, 14236765), (1432, 12486995), (1570, 11389412), (1790, 9989596), (3140, 5694706), (3580, 4994798), (6280, 2847353), (7160, 2497399), (15907, 1124120), (28103, 636280), (31814, 562060), (56206, 318140), (63628, 281030), (79535, 224824), (112412, 159070), (127256, 140515)]