31257560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1069}}^1$

素因数の和:1140

約数の個数: 64

約数和(自身を含む): 76269600

約数和(自身を除く): 45012040

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 68, 85, 86, 136, 170, 172, 215, 340, 344, 430, 680, 731, 860, 1069, 1462, 1720, 2138, 2924, 3655, 4276, 5345, 5848, 7310, 8552, 10690, 14620, 18173, 21380, 29240, 36346, 42760, 45967, 72692, 90865, 91934, 145384, 181730, 183868, 229835, 363460, 367736, 459670, 726920, 781439, 919340, 1562878, 1838680, 3125756, 3907195, 6251512, 7814390, 15628780, 31257560]

約数ペア:

[(1, 31257560), (2, 15628780), (4, 7814390), (5, 6251512), (8, 3907195), (10, 3125756), (17, 1838680), (20, 1562878), (34, 919340), (40, 781439), (43, 726920), (68, 459670), (85, 367736), (86, 363460), (136, 229835), (170, 183868), (172, 181730), (215, 145384), (340, 91934), (344, 90865), (430, 72692), (680, 45967), (731, 42760), (860, 36346), (1069, 29240), (1462, 21380), (1720, 18173), (2138, 14620), (2924, 10690), (3655, 8552), (4276, 7310), (5345, 5848)]