81581724

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{523}}^1\times {\mathrm{619}}^1$

素因数の和:1159

約数の個数: 72

約数和(自身を含む): 236512640

約数和(自身を除く): 154930916

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 523, 619, 1046, 1238, 1569, 1857, 2092, 2476, 3138, 3661, 3714, 4333, 4707, 5571, 6276, 7322, 7428, 8666, 9414, 10983, 11142, 12999, 14644, 17332, 18828, 21966, 22284, 25998, 32949, 38997, 43932, 51996, 65898, 77994, 131796, 155988, 323737, 647474, 971211, 1294948, 1942422, 2266159, 2913633, 3884844, 4532318, 5827266, 6798477, 9064636, 11654532, 13596954, 20395431, 27193908, 40790862, 81581724]

約数ペア:

[(1, 81581724), (2, 40790862), (3, 27193908), (4, 20395431), (6, 13596954), (7, 11654532), (9, 9064636), (12, 6798477), (14, 5827266), (18, 4532318), (21, 3884844), (28, 2913633), (36, 2266159), (42, 1942422), (63, 1294948), (84, 971211), (126, 647474), (252, 323737), (523, 155988), (619, 131796), (1046, 77994), (1238, 65898), (1569, 51996), (1857, 43932), (2092, 38997), (2476, 32949), (3138, 25998), (3661, 22284), (3714, 21966), (4333, 18828), (4707, 17332), (5571, 14644), (6276, 12999), (7322, 11142), (7428, 10983), (8666, 9414)]