21338982

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1039}}^1$

素因数の和:1217

約数の個数: 48

約数和(自身を含む): 53214720

約数和(自身を除く): 31875738

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 163, 326, 489, 978, 1039, 1141, 1467, 2078, 2282, 2934, 3117, 3423, 6234, 6846, 7273, 9351, 10269, 14546, 18702, 20538, 21819, 43638, 65457, 130914, 169357, 338714, 508071, 1016142, 1185499, 1524213, 2370998, 3048426, 3556497, 7112994, 10669491, 21338982]

約数ペア:

[(1, 21338982), (2, 10669491), (3, 7112994), (6, 3556497), (7, 3048426), (9, 2370998), (14, 1524213), (18, 1185499), (21, 1016142), (42, 508071), (63, 338714), (126, 169357), (163, 130914), (326, 65457), (489, 43638), (978, 21819), (1039, 20538), (1141, 18702), (1467, 14546), (2078, 10269), (2282, 9351), (2934, 7273), (3117, 6846), (3423, 6234)]