19428375

素因数分解:

$3^1\times 5^3\times {\mathrm{103}}^1\times {\mathrm{503}}^1$

素因数の和:624

約数の個数: 32

約数和(自身を含む): 32707584

約数和(自身を除く): 13279209

約数列:

[1, 3, 5, 15, 25, 75, 103, 125, 309, 375, 503, 515, 1509, 1545, 2515, 2575, 7545, 7725, 12575, 12875, 37725, 38625, 51809, 62875, 155427, 188625, 259045, 777135, 1295225, 3885675, 6476125, 19428375]

約数ペア:

[(1, 19428375), (3, 6476125), (5, 3885675), (15, 1295225), (25, 777135), (75, 259045), (103, 188625), (125, 155427), (309, 62875), (375, 51809), (503, 38625), (515, 37725), (1509, 12875), (1545, 12575), (2515, 7725), (2575, 7545)]