21938514

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 50147328

約数和(自身を除く): 28208814

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 43, 62, 78, 86, 93, 129, 186, 211, 258, 403, 422, 559, 633, 806, 1118, 1209, 1266, 1333, 1677, 2418, 2666, 2743, 3354, 3999, 5486, 6541, 7998, 8229, 9073, 13082, 16458, 17329, 18146, 19623, 27219, 34658, 39246, 51987, 54438, 85033, 103974, 117949, 170066, 235898, 255099, 281263, 353847, 510198, 562526, 707694, 843789, 1687578, 3656419, 7312838, 10969257, 21938514]

約数ペア:

[(1, 21938514), (2, 10969257), (3, 7312838), (6, 3656419), (13, 1687578), (26, 843789), (31, 707694), (39, 562526), (43, 510198), (62, 353847), (78, 281263), (86, 255099), (93, 235898), (129, 170066), (186, 117949), (211, 103974), (258, 85033), (403, 54438), (422, 51987), (559, 39246), (633, 34658), (806, 27219), (1118, 19623), (1209, 18146), (1266, 17329), (1333, 16458), (1677, 13082), (2418, 9073), (2666, 8229), (2743, 7998), (3354, 6541), (3999, 5486)]