19945365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1109}}^1$

素因数の和:1237

約数の個数: 32

約数和(自身を含む): 35164800

約数和(自身を除く): 15219435

約数列:

[1, 3, 5, 11, 15, 33, 55, 109, 165, 327, 545, 1109, 1199, 1635, 3327, 3597, 5545, 5995, 12199, 16635, 17985, 36597, 60995, 120881, 182985, 362643, 604405, 1329691, 1813215, 3989073, 6648455, 19945365]

約数ペア:

[(1, 19945365), (3, 6648455), (5, 3989073), (11, 1813215), (15, 1329691), (33, 604405), (55, 362643), (109, 182985), (165, 120881), (327, 60995), (545, 36597), (1109, 17985), (1199, 16635), (1635, 12199), (3327, 5995), (3597, 5545)]