651440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{479}}^1$

素因数の和:509

約数の個数: 40

約数和(自身を含む): 1607040

約数和(自身を除く): 955600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 479, 680, 958, 1360, 1916, 2395, 3832, 4790, 7664, 8143, 9580, 16286, 19160, 32572, 38320, 40715, 65144, 81430, 130288, 162860, 325720, 651440]

約数ペア:

[(1, 651440), (2, 325720), (4, 162860), (5, 130288), (8, 81430), (10, 65144), (16, 40715), (17, 38320), (20, 32572), (34, 19160), (40, 16286), (68, 9580), (80, 8143), (85, 7664), (136, 4790), (170, 3832), (272, 2395), (340, 1916), (479, 1360), (680, 958)]