1640472760

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1\times {\mathrm{907}}^1$

素因数の和:1460

約数の個数: 64

約数和(自身を含む): 3739507200

約数和(自身を除く): 2099034440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 439, 515, 824, 878, 907, 1030, 1756, 1814, 2060, 2195, 3512, 3628, 4120, 4390, 4535, 7256, 8780, 9070, 17560, 18140, 36280, 45217, 90434, 93421, 180868, 186842, 226085, 361736, 373684, 398173, 452170, 467105, 747368, 796346, 904340, 934210, 1592692, 1808680, 1868420, 1990865, 3185384, 3736840, 3981730, 7963460, 15926920, 41011819, 82023638, 164047276, 205059095, 328094552, 410118190, 820236380, 1640472760]

約数ペア:

[(1, 1640472760), (2, 820236380), (4, 410118190), (5, 328094552), (8, 205059095), (10, 164047276), (20, 82023638), (40, 41011819), (103, 15926920), (206, 7963460), (412, 3981730), (439, 3736840), (515, 3185384), (824, 1990865), (878, 1868420), (907, 1808680), (1030, 1592692), (1756, 934210), (1814, 904340), (2060, 796346), (2195, 747368), (3512, 467105), (3628, 452170), (4120, 398173), (4390, 373684), (4535, 361736), (7256, 226085), (8780, 186842), (9070, 180868), (17560, 93421), (18140, 90434), (36280, 45217)]