20782515

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{541}}^1$

素因数の和:759

約数の個数: 32

約数和(自身を含む): 36058176

約数和(自身を除く): 15275661

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 197, 541, 591, 985, 1623, 2561, 2705, 2955, 7033, 7683, 8115, 12805, 21099, 35165, 38415, 105495, 106577, 319731, 532885, 1385501, 1598655, 4156503, 6927505, 20782515]

約数ペア:

[(1, 20782515), (3, 6927505), (5, 4156503), (13, 1598655), (15, 1385501), (39, 532885), (65, 319731), (195, 106577), (197, 105495), (541, 38415), (591, 35165), (985, 21099), (1623, 12805), (2561, 8115), (2705, 7683), (2955, 7033)]