20487816

素因数分解:

$2^3\times 3^7\times {\mathrm{1171}}^1$

素因数の和:1198

約数の個数: 64

約数和(自身を含む): 57662400

約数和(自身を除く): 37174584

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 243, 324, 486, 648, 729, 972, 1171, 1458, 1944, 2187, 2342, 2916, 3513, 4374, 4684, 5832, 7026, 8748, 9368, 10539, 14052, 17496, 21078, 28104, 31617, 42156, 63234, 84312, 94851, 126468, 189702, 252936, 284553, 379404, 569106, 758808, 853659, 1138212, 1707318, 2276424, 2560977, 3414636, 5121954, 6829272, 10243908, 20487816]

約数ペア:

[(1, 20487816), (2, 10243908), (3, 6829272), (4, 5121954), (6, 3414636), (8, 2560977), (9, 2276424), (12, 1707318), (18, 1138212), (24, 853659), (27, 758808), (36, 569106), (54, 379404), (72, 284553), (81, 252936), (108, 189702), (162, 126468), (216, 94851), (243, 84312), (324, 63234), (486, 42156), (648, 31617), (729, 28104), (972, 21078), (1171, 17496), (1458, 14052), (1944, 10539), (2187, 9368), (2342, 8748), (2916, 7026), (3513, 5832), (4374, 4684)]