81189355

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 107956800

約数和(自身を除く): 26767445

約数列:

[1, 5, 13, 65, 83, 101, 149, 415, 505, 745, 1079, 1313, 1937, 5395, 6565, 8383, 9685, 12367, 15049, 41915, 61835, 75245, 108979, 160771, 195637, 544895, 803855, 978185, 1249067, 6245335, 16237871, 81189355]

約数ペア:

[(1, 81189355), (5, 16237871), (13, 6245335), (65, 1249067), (83, 978185), (101, 803855), (149, 544895), (415, 195637), (505, 160771), (745, 108979), (1079, 75245), (1313, 61835), (1937, 41915), (5395, 15049), (6565, 12367), (8383, 9685)]