81131175

素因数分解:

$3^2\times 5^2\times {\mathrm{113}}^1\times {\mathrm{3191}}^1$

素因数の和:3320

約数の個数: 36

約数和(自身を含む): 146646864

約数和(自身を除く): 65515689

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 113, 225, 339, 565, 1017, 1695, 2825, 3191, 5085, 8475, 9573, 15955, 25425, 28719, 47865, 79775, 143595, 239325, 360583, 717975, 1081749, 1802915, 3245247, 5408745, 9014575, 16226235, 27043725, 81131175]

約数ペア:

[(1, 81131175), (3, 27043725), (5, 16226235), (9, 9014575), (15, 5408745), (25, 3245247), (45, 1802915), (75, 1081749), (113, 717975), (225, 360583), (339, 239325), (565, 143595), (1017, 79775), (1695, 47865), (2825, 28719), (3191, 25425), (5085, 15955), (8475, 9573)]