172765720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 398131200

約数和(自身を除く): 225365480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 127, 142, 254, 284, 355, 479, 508, 568, 635, 710, 958, 1016, 1270, 1420, 1916, 2395, 2540, 2840, 3832, 4790, 5080, 9017, 9580, 18034, 19160, 34009, 36068, 45085, 60833, 68018, 72136, 90170, 121666, 136036, 170045, 180340, 243332, 272072, 304165, 340090, 360680, 486664, 608330, 680180, 1216660, 1360360, 2433320, 4319143, 8638286, 17276572, 21595715, 34553144, 43191430, 86382860, 172765720]

約数ペア:

[(1, 172765720), (2, 86382860), (4, 43191430), (5, 34553144), (8, 21595715), (10, 17276572), (20, 8638286), (40, 4319143), (71, 2433320), (127, 1360360), (142, 1216660), (254, 680180), (284, 608330), (355, 486664), (479, 360680), (508, 340090), (568, 304165), (635, 272072), (710, 243332), (958, 180340), (1016, 170045), (1270, 136036), (1420, 121666), (1916, 90170), (2395, 72136), (2540, 68018), (2840, 60833), (3832, 45085), (4790, 36068), (5080, 34009), (9017, 19160), (9580, 18034)]