81749640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{13903}}^1$

素因数の和:13931

約数の個数: 96

約数和(自身を含む): 285310080

約数和(自身を除く): 203560440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 5880, 13903, 27806, 41709, 55612, 69515, 83418, 97321, 111224, 139030, 166836, 194642, 208545, 278060, 291963, 333672, 389284, 417090, 486605, 556120, 583926, 681247, 778568, 834180, 973210, 1167852, 1362494, 1459815, 1668360, 1946420, 2043741, 2335704, 2724988, 2919630, 3406235, 3892840, 4087482, 5449976, 5839260, 6812470, 8174964, 10218705, 11678520, 13624940, 16349928, 20437410, 27249880, 40874820, 81749640]

約数ペア:

[(1, 81749640), (2, 40874820), (3, 27249880), (4, 20437410), (5, 16349928), (6, 13624940), (7, 11678520), (8, 10218705), (10, 8174964), (12, 6812470), (14, 5839260), (15, 5449976), (20, 4087482), (21, 3892840), (24, 3406235), (28, 2919630), (30, 2724988), (35, 2335704), (40, 2043741), (42, 1946420), (49, 1668360), (56, 1459815), (60, 1362494), (70, 1167852), (84, 973210), (98, 834180), (105, 778568), (120, 681247), (140, 583926), (147, 556120), (168, 486605), (196, 417090), (210, 389284), (245, 333672), (280, 291963), (294, 278060), (392, 208545), (420, 194642), (490, 166836), (588, 139030), (735, 111224), (840, 97321), (980, 83418), (1176, 69515), (1470, 55612), (1960, 41709), (2940, 27806), (5880, 13903)]