19909635

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{479}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 14097405

約数列:

[1, 3, 5, 15, 17, 51, 85, 163, 255, 479, 489, 815, 1437, 2395, 2445, 2771, 7185, 8143, 8313, 13855, 24429, 40715, 41565, 78077, 122145, 234231, 390385, 1171155, 1327309, 3981927, 6636545, 19909635]

約数ペア:

[(1, 19909635), (3, 6636545), (5, 3981927), (15, 1327309), (17, 1171155), (51, 390385), (85, 234231), (163, 122145), (255, 78077), (479, 41565), (489, 40715), (815, 24429), (1437, 13855), (2395, 8313), (2445, 8143), (2771, 7185)]