81137345

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 107205120

約数和(自身を除く): 26067775

約数列:

[1, 5, 17, 43, 79, 85, 215, 281, 395, 731, 1343, 1405, 3397, 3655, 4777, 6715, 12083, 16985, 22199, 23885, 57749, 60415, 110995, 205411, 288745, 377383, 954557, 1027055, 1886915, 4772785, 16227469, 81137345]

約数ペア:

[(1, 81137345), (5, 16227469), (17, 4772785), (43, 1886915), (79, 1027055), (85, 954557), (215, 377383), (281, 288745), (395, 205411), (731, 110995), (1343, 60415), (1405, 57749), (3397, 23885), (3655, 22199), (4777, 16985), (6715, 12083)]