8918980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:521

約数の個数: 72

約数和(自身を含む): 22982400

約数和(自身を除く): 14063420

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 479, 490, 532, 665, 931, 958, 980, 1330, 1862, 1916, 2395, 2660, 3353, 3724, 4655, 4790, 6706, 9101, 9310, 9580, 13412, 16765, 18202, 18620, 23471, 33530, 36404, 45505, 46942, 63707, 67060, 91010, 93884, 117355, 127414, 182020, 234710, 254828, 318535, 445949, 469420, 637070, 891898, 1274140, 1783796, 2229745, 4459490, 8918980]

約数ペア:

[(1, 8918980), (2, 4459490), (4, 2229745), (5, 1783796), (7, 1274140), (10, 891898), (14, 637070), (19, 469420), (20, 445949), (28, 318535), (35, 254828), (38, 234710), (49, 182020), (70, 127414), (76, 117355), (95, 93884), (98, 91010), (133, 67060), (140, 63707), (190, 46942), (196, 45505), (245, 36404), (266, 33530), (380, 23471), (479, 18620), (490, 18202), (532, 16765), (665, 13412), (931, 9580), (958, 9310), (980, 9101), (1330, 6706), (1862, 4790), (1916, 4655), (2395, 3724), (2660, 3353)]