19720778882

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{397}}^1\times {\mathrm{4219}}^1$

素因数の和:4683

約数の個数: 48

約数和(自身を含む): 35109522240

約数和(自身を除く): 15388743358

約数列:

[1, 2, 7, 14, 29, 58, 203, 397, 406, 794, 841, 1682, 2779, 4219, 5558, 5887, 8438, 11513, 11774, 23026, 29533, 59066, 80591, 122351, 161182, 244702, 333877, 667754, 856457, 1674943, 1712914, 2337139, 3349886, 3548179, 4674278, 7096358, 11724601, 23449202, 24837253, 48573347, 49674506, 97146694, 340013429, 680026858, 1408627063, 2817254126, 9860389441, 19720778882]

約数ペア:

[(1, 19720778882), (2, 9860389441), (7, 2817254126), (14, 1408627063), (29, 680026858), (58, 340013429), (203, 97146694), (397, 49674506), (406, 48573347), (794, 24837253), (841, 23449202), (1682, 11724601), (2779, 7096358), (4219, 4674278), (5558, 3548179), (5887, 3349886), (8438, 2337139), (11513, 1712914), (11774, 1674943), (23026, 856457), (29533, 667754), (59066, 333877), (80591, 244702), (122351, 161182)]