220588991

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 275351040

約数和(自身を除く): 54762049

約数列:

[1, 7, 17, 67, 73, 119, 379, 469, 511, 1139, 1241, 2653, 4891, 6443, 7973, 8687, 25393, 27667, 34237, 45101, 83147, 177751, 193669, 431681, 470339, 582029, 1853689, 3021767, 3292373, 12975823, 31512713, 220588991]

約数ペア:

[(1, 220588991), (7, 31512713), (17, 12975823), (67, 3292373), (73, 3021767), (119, 1853689), (379, 582029), (469, 470339), (511, 431681), (1139, 193669), (1241, 177751), (2653, 83147), (4891, 45101), (6443, 34237), (7973, 27667), (8687, 25393)]