18678870

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{9883}}^1$

素因数の和:9906

約数の個数: 64

約数和(自身を含む): 56931840

約数和(自身を除く): 38252970

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 9883, 19766, 29649, 49415, 59298, 69181, 88947, 98830, 138362, 148245, 177894, 207543, 266841, 296490, 345905, 415086, 444735, 533682, 622629, 691810, 889470, 1037715, 1245258, 1334205, 1867887, 2075430, 2668410, 3113145, 3735774, 6226290, 9339435, 18678870]

約数ペア:

[(1, 18678870), (2, 9339435), (3, 6226290), (5, 3735774), (6, 3113145), (7, 2668410), (9, 2075430), (10, 1867887), (14, 1334205), (15, 1245258), (18, 1037715), (21, 889470), (27, 691810), (30, 622629), (35, 533682), (42, 444735), (45, 415086), (54, 345905), (63, 296490), (70, 266841), (90, 207543), (105, 177894), (126, 148245), (135, 138362), (189, 98830), (210, 88947), (270, 69181), (315, 59298), (378, 49415), (630, 29649), (945, 19766), (1890, 9883)]