19984605

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{719}}^1$

素因数の和:853

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 14229795

約数列:

[1, 3, 5, 15, 17, 51, 85, 109, 255, 327, 545, 719, 1635, 1853, 2157, 3595, 5559, 9265, 10785, 12223, 27795, 36669, 61115, 78371, 183345, 235113, 391855, 1175565, 1332307, 3996921, 6661535, 19984605]

約数ペア:

[(1, 19984605), (3, 6661535), (5, 3996921), (15, 1332307), (17, 1175565), (51, 391855), (85, 235113), (109, 183345), (255, 78371), (327, 61115), (545, 36669), (719, 27795), (1635, 12223), (1853, 10785), (2157, 9265), (3595, 5559)]