215492745

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^4\times {\mathrm{503}}^1$

素因数の和:563

約数の個数: 40

約数和(自身を含む): 374262336

約数和(自身を除く): 158769591

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 503, 507, 845, 1509, 2197, 2515, 2535, 6539, 6591, 7545, 10985, 19617, 28561, 32695, 32955, 85007, 85683, 98085, 142805, 255021, 425035, 428415, 1105091, 1275105, 3315273, 5525455, 14366183, 16576365, 43098549, 71830915, 215492745]

約数ペア:

[(1, 215492745), (3, 71830915), (5, 43098549), (13, 16576365), (15, 14366183), (39, 5525455), (65, 3315273), (169, 1275105), (195, 1105091), (503, 428415), (507, 425035), (845, 255021), (1509, 142805), (2197, 98085), (2515, 85683), (2535, 85007), (6539, 32955), (6591, 32695), (7545, 28561), (10985, 19617)]