19997595

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1231}}^1$

素因数の和:1280

約数の個数: 36

約数和(自身を含む): 36612576

約数和(自身を除く): 16614981

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 361, 855, 1083, 1231, 1805, 3249, 3693, 5415, 6155, 11079, 16245, 18465, 23389, 55395, 70167, 116945, 210501, 350835, 444391, 1052505, 1333173, 2221955, 3999519, 6665865, 19997595]

約数ペア:

[(1, 19997595), (3, 6665865), (5, 3999519), (9, 2221955), (15, 1333173), (19, 1052505), (45, 444391), (57, 350835), (95, 210501), (171, 116945), (285, 70167), (361, 55395), (855, 23389), (1083, 18465), (1231, 16245), (1805, 11079), (3249, 6155), (3693, 5415)]