31491880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2393}}^1$

素因数の和:2458

約数の個数: 64

約数和(自身を含む): 82736640

約数和(自身を除く): 51244760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1645, 1880, 2393, 2632, 3290, 4786, 6580, 9572, 11965, 13160, 16751, 19144, 23930, 33502, 47860, 67004, 83755, 95720, 112471, 134008, 167510, 224942, 335020, 449884, 562355, 670040, 787297, 899768, 1124710, 1574594, 2249420, 3149188, 3936485, 4498840, 6298376, 7872970, 15745940, 31491880]

約数ペア:

[(1, 31491880), (2, 15745940), (4, 7872970), (5, 6298376), (7, 4498840), (8, 3936485), (10, 3149188), (14, 2249420), (20, 1574594), (28, 1124710), (35, 899768), (40, 787297), (47, 670040), (56, 562355), (70, 449884), (94, 335020), (140, 224942), (188, 167510), (235, 134008), (280, 112471), (329, 95720), (376, 83755), (470, 67004), (658, 47860), (940, 33502), (1316, 23930), (1645, 19144), (1880, 16751), (2393, 13160), (2632, 11965), (3290, 9572), (4786, 6580)]