17981745

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{52121}}^1$

素因数の和:52152

約数の個数: 16

約数和(自身を含む): 30022272

約数和(自身を除く): 12040527

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 52121, 156363, 260605, 781815, 1198783, 3596349, 5993915, 17981745]

約数ペア:

[(1, 17981745), (3, 5993915), (5, 3596349), (15, 1198783), (23, 781815), (69, 260605), (115, 156363), (345, 52121)]