20212899

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{509}}^1$

素因数の和:611

約数の個数: 32

約数和(自身を含む): 32378880

約数和(自身を除く): 12165981

約数列:

[1, 3, 7, 21, 31, 61, 93, 183, 217, 427, 509, 651, 1281, 1527, 1891, 3563, 5673, 10689, 13237, 15779, 31049, 39711, 47337, 93147, 110453, 217343, 331359, 652029, 962519, 2887557, 6737633, 20212899]

約数ペア:

[(1, 20212899), (3, 6737633), (7, 2887557), (21, 962519), (31, 652029), (61, 331359), (93, 217343), (183, 110453), (217, 93147), (427, 47337), (509, 39711), (651, 31049), (1281, 15779), (1527, 13237), (1891, 10689), (3563, 5673)]