81811380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{27827}}^1$

素因数の和:27853

約数の個数: 72

約数和(自身を含む): 266480928

約数和(自身を除く): 184669548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 27827, 55654, 83481, 111308, 139135, 166962, 194789, 278270, 333924, 389578, 417405, 556540, 584367, 779156, 834810, 973945, 1168734, 1363523, 1669620, 1947890, 2337468, 2727046, 2921835, 3895780, 4090569, 5454092, 5843670, 6817615, 8181138, 11687340, 13635230, 16362276, 20452845, 27270460, 40905690, 81811380]

約数ペア:

[(1, 81811380), (2, 40905690), (3, 27270460), (4, 20452845), (5, 16362276), (6, 13635230), (7, 11687340), (10, 8181138), (12, 6817615), (14, 5843670), (15, 5454092), (20, 4090569), (21, 3895780), (28, 2921835), (30, 2727046), (35, 2337468), (42, 1947890), (49, 1669620), (60, 1363523), (70, 1168734), (84, 973945), (98, 834810), (105, 779156), (140, 584367), (147, 556540), (196, 417405), (210, 389578), (245, 333924), (294, 278270), (420, 194789), (490, 166962), (588, 139135), (735, 111308), (980, 83481), (1470, 55654), (2940, 27827)]