20972776

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{3907}}^1$

素因数の和:3985

約数の個数: 32

約数和(自身を含む): 43613280

約数和(自身を除く): 22640504

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 3907, 5368, 7814, 15628, 31256, 42977, 85954, 171908, 238327, 343816, 476654, 953308, 1906616, 2621597, 5243194, 10486388, 20972776]

約数ペア:

[(1, 20972776), (2, 10486388), (4, 5243194), (8, 2621597), (11, 1906616), (22, 953308), (44, 476654), (61, 343816), (88, 238327), (122, 171908), (244, 85954), (488, 42977), (671, 31256), (1342, 15628), (2684, 7814), (3907, 5368)]