128534975

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 162846720

約数和(自身を除く): 34311745

約数列:

[1, 5, 25, 79, 151, 395, 431, 755, 1975, 2155, 3775, 10775, 11929, 34049, 59645, 65081, 170245, 298225, 325405, 851225, 1627025, 5141399, 25706995, 128534975]

約数ペア:

[(1, 128534975), (5, 25706995), (25, 5141399), (79, 1627025), (151, 851225), (395, 325405), (431, 298225), (755, 170245), (1975, 65081), (2155, 59645), (3775, 34049), (10775, 11929)]