18818805

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 31033728

約数和(自身を除く): 12214923

約数列:

[1, 3, 5, 15, 61, 131, 157, 183, 305, 393, 471, 655, 785, 915, 1965, 2355, 7991, 9577, 20567, 23973, 28731, 39955, 47885, 61701, 102835, 119865, 143655, 308505, 1254587, 3763761, 6272935, 18818805]

約数ペア:

[(1, 18818805), (3, 6272935), (5, 3763761), (15, 1254587), (61, 308505), (131, 143655), (157, 119865), (183, 102835), (305, 61701), (393, 47885), (471, 39955), (655, 28731), (785, 23973), (915, 20567), (1965, 9577), (2355, 7991)]