20019813

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{131}}^1\times {\mathrm{421}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 29634528

約数和(自身を除く): 9614715

約数列:

[1, 3, 11, 33, 121, 131, 363, 393, 421, 1263, 1441, 4323, 4631, 13893, 15851, 47553, 50941, 55151, 152823, 165453, 606661, 1819983, 6673271, 20019813]

約数ペア:

[(1, 20019813), (3, 6673271), (11, 1819983), (33, 606661), (121, 165453), (131, 152823), (363, 55151), (393, 50941), (421, 47553), (1263, 15851), (1441, 13893), (4323, 4631)]