81597420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{1997}}^1$

素因数の和:2239

約数の個数: 72

約数和(自身を含む): 248727024

約数和(自身を除く): 167129604

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 227, 454, 681, 908, 1135, 1362, 1997, 2043, 2270, 2724, 3405, 3994, 4086, 4540, 5991, 6810, 7988, 8172, 9985, 10215, 11982, 13620, 17973, 19970, 20430, 23964, 29955, 35946, 39940, 40860, 59910, 71892, 89865, 119820, 179730, 359460, 453319, 906638, 1359957, 1813276, 2266595, 2719914, 4079871, 4533190, 5439828, 6799785, 8159742, 9066380, 13599570, 16319484, 20399355, 27199140, 40798710, 81597420]

約数ペア:

[(1, 81597420), (2, 40798710), (3, 27199140), (4, 20399355), (5, 16319484), (6, 13599570), (9, 9066380), (10, 8159742), (12, 6799785), (15, 5439828), (18, 4533190), (20, 4079871), (30, 2719914), (36, 2266595), (45, 1813276), (60, 1359957), (90, 906638), (180, 453319), (227, 359460), (454, 179730), (681, 119820), (908, 89865), (1135, 71892), (1362, 59910), (1997, 40860), (2043, 39940), (2270, 35946), (2724, 29955), (3405, 23964), (3994, 20430), (4086, 19970), (4540, 17973), (5991, 13620), (6810, 11982), (7988, 10215), (8172, 9985)]