1780660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 4596480

約数和(自身を除く): 2815820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 79, 92, 98, 115, 140, 158, 161, 196, 230, 245, 316, 322, 395, 460, 490, 553, 644, 790, 805, 980, 1106, 1127, 1580, 1610, 1817, 2212, 2254, 2765, 3220, 3634, 3871, 4508, 5530, 5635, 7268, 7742, 9085, 11060, 11270, 12719, 15484, 18170, 19355, 22540, 25438, 36340, 38710, 50876, 63595, 77420, 89033, 127190, 178066, 254380, 356132, 445165, 890330, 1780660]

約数ペア:

[(1, 1780660), (2, 890330), (4, 445165), (5, 356132), (7, 254380), (10, 178066), (14, 127190), (20, 89033), (23, 77420), (28, 63595), (35, 50876), (46, 38710), (49, 36340), (70, 25438), (79, 22540), (92, 19355), (98, 18170), (115, 15484), (140, 12719), (158, 11270), (161, 11060), (196, 9085), (230, 7742), (245, 7268), (316, 5635), (322, 5530), (395, 4508), (460, 3871), (490, 3634), (553, 3220), (644, 2765), (790, 2254), (805, 2212), (980, 1817), (1106, 1610), (1127, 1580)]