221986815

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1\times {\mathrm{839}}^1$

素因数の和:1447

約数の個数: 32

約数和(自身を含む): 367718400

約数和(自身を除く): 145731585

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 569, 839, 1707, 2517, 2845, 4195, 8535, 12585, 17639, 26009, 52917, 78027, 88195, 130045, 264585, 390135, 477391, 1432173, 2386955, 7160865, 14799121, 44397363, 73995605, 221986815]

約数ペア:

[(1, 221986815), (3, 73995605), (5, 44397363), (15, 14799121), (31, 7160865), (93, 2386955), (155, 1432173), (465, 477391), (569, 390135), (839, 264585), (1707, 130045), (2517, 88195), (2845, 78027), (4195, 52917), (8535, 26009), (12585, 17639)]