21691416

素因数分解:

$2^3\times 3^1\times {\mathrm{53}}^1\times {\mathrm{17053}}^1$

素因数の和:17115

約数の個数: 32

約数和(自身を含む): 55254960

約数和(自身を除く): 33563544

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 53, 106, 159, 212, 318, 424, 636, 1272, 17053, 34106, 51159, 68212, 102318, 136424, 204636, 409272, 903809, 1807618, 2711427, 3615236, 5422854, 7230472, 10845708, 21691416]

約数ペア:

[(1, 21691416), (2, 10845708), (3, 7230472), (4, 5422854), (6, 3615236), (8, 2711427), (12, 1807618), (24, 903809), (53, 409272), (106, 204636), (159, 136424), (212, 102318), (318, 68212), (424, 51159), (636, 34106), (1272, 17053)]