21930579

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 15135021

約数列:

[1, 3, 9, 11, 19, 33, 57, 89, 99, 131, 171, 209, 267, 393, 627, 801, 979, 1179, 1441, 1691, 1881, 2489, 2937, 4323, 5073, 7467, 8811, 11659, 12969, 15219, 18601, 22401, 27379, 34977, 55803, 82137, 104931, 128249, 167409, 221521, 246411, 384747, 664563, 1154241, 1993689, 2436731, 7310193, 21930579]

約数ペア:

[(1, 21930579), (3, 7310193), (9, 2436731), (11, 1993689), (19, 1154241), (33, 664563), (57, 384747), (89, 246411), (99, 221521), (131, 167409), (171, 128249), (209, 104931), (267, 82137), (393, 55803), (627, 34977), (801, 27379), (979, 22401), (1179, 18601), (1441, 15219), (1691, 12969), (1881, 11659), (2489, 8811), (2937, 7467), (4323, 5073)]