21672892

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^2\times {\mathrm{71}}^1$

素因数の和:226

約数の個数: 36

約数和(自身を含む): 41341104

約数和(自身を除く): 19668212

約数列:

[1, 2, 4, 17, 34, 67, 68, 71, 134, 142, 268, 284, 1139, 1207, 2278, 2414, 4489, 4556, 4757, 4828, 8978, 9514, 17956, 19028, 76313, 80869, 152626, 161738, 305252, 318719, 323476, 637438, 1274876, 5418223, 10836446, 21672892]

約数ペア:

[(1, 21672892), (2, 10836446), (4, 5418223), (17, 1274876), (34, 637438), (67, 323476), (68, 318719), (71, 305252), (134, 161738), (142, 152626), (268, 80869), (284, 76313), (1139, 19028), (1207, 17956), (2278, 9514), (2414, 8978), (4489, 4828), (4556, 4757)]