20019897

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:262

約数の個数: 36

約数和(自身を含む): 31608720

約数和(自身を除く): 11588823

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 179, 289, 387, 537, 731, 867, 1611, 2193, 2601, 3043, 6579, 7697, 9129, 12427, 23091, 27387, 37281, 51731, 69273, 111843, 130849, 155193, 392547, 465579, 1177641, 2224433, 6673299, 20019897]

約数ペア:

[(1, 20019897), (3, 6673299), (9, 2224433), (17, 1177641), (43, 465579), (51, 392547), (129, 155193), (153, 130849), (179, 111843), (289, 69273), (387, 51731), (537, 37281), (731, 27387), (867, 23091), (1611, 12427), (2193, 9129), (2601, 7697), (3043, 6579)]