220121251

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1091}}^1$

素因数の和:1195

約数の個数: 32

約数和(自身を含む): 278853120

約数和(自身を除く): 58731869

約数列:

[1, 7, 19, 37, 41, 133, 259, 287, 703, 779, 1091, 1517, 4921, 5453, 7637, 10619, 20729, 28823, 40367, 44731, 145103, 201761, 282569, 313117, 766973, 849889, 1655047, 5368811, 5949223, 11585329, 31445893, 220121251]

約数ペア:

[(1, 220121251), (7, 31445893), (19, 11585329), (37, 5949223), (41, 5368811), (133, 1655047), (259, 849889), (287, 766973), (703, 313117), (779, 282569), (1091, 201761), (1517, 145103), (4921, 44731), (5453, 40367), (7637, 28823), (10619, 20729)]