19995304

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 24794456

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 71, 94, 107, 142, 188, 214, 284, 329, 376, 428, 497, 568, 658, 749, 856, 994, 1316, 1498, 1988, 2632, 2996, 3337, 3976, 5029, 5992, 6674, 7597, 10058, 13348, 15194, 20116, 23359, 26696, 30388, 35203, 40232, 46718, 53179, 60776, 70406, 93436, 106358, 140812, 186872, 212716, 281624, 357059, 425432, 714118, 1428236, 2499413, 2856472, 4998826, 9997652, 19995304]

約数ペア:

[(1, 19995304), (2, 9997652), (4, 4998826), (7, 2856472), (8, 2499413), (14, 1428236), (28, 714118), (47, 425432), (56, 357059), (71, 281624), (94, 212716), (107, 186872), (142, 140812), (188, 106358), (214, 93436), (284, 70406), (329, 60776), (376, 53179), (428, 46718), (497, 40232), (568, 35203), (658, 30388), (749, 26696), (856, 23359), (994, 20116), (1316, 15194), (1498, 13348), (1988, 10058), (2632, 7597), (2996, 6674), (3337, 5992), (3976, 5029)]