20154925820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1\times {\mathrm{60961}}^1$

素因数の和:61302

約数の個数: 48

約数和(自身を含む): 43178653056

約数和(自身を除く): 23023727236

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 271, 305, 542, 610, 1084, 1220, 1355, 2710, 5420, 16531, 33062, 60961, 66124, 82655, 121922, 165310, 243844, 304805, 330620, 609610, 1219220, 3718621, 7437242, 14874484, 16520431, 18593105, 33040862, 37186210, 66081724, 74372420, 82602155, 165204310, 330408620, 1007746291, 2015492582, 4030985164, 5038731455, 10077462910, 20154925820]

約数ペア:

[(1, 20154925820), (2, 10077462910), (4, 5038731455), (5, 4030985164), (10, 2015492582), (20, 1007746291), (61, 330408620), (122, 165204310), (244, 82602155), (271, 74372420), (305, 66081724), (542, 37186210), (610, 33040862), (1084, 18593105), (1220, 16520431), (1355, 14874484), (2710, 7437242), (5420, 3718621), (16531, 1219220), (33062, 609610), (60961, 330620), (66124, 304805), (82655, 243844), (121922, 165310)]