19979405

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1\times {\mathrm{607}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 24952320

約数和(自身を除く): 4972915

約数列:

[1, 5, 29, 145, 227, 607, 1135, 3035, 6583, 17603, 32915, 88015, 137789, 688945, 3995881, 19979405]

約数ペア:

[(1, 19979405), (5, 3995881), (29, 688945), (145, 137789), (227, 88015), (607, 32915), (1135, 17603), (3035, 6583)]