19877455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2969}}^1$

素因数の和:3090

約数の個数: 16

約数和(自身を含む): 25945920

約数和(自身を除く): 6068465

約数列:

[1, 5, 13, 65, 103, 515, 1339, 2969, 6695, 14845, 38597, 192985, 305807, 1529035, 3975491, 19877455]

約数ペア:

[(1, 19877455), (5, 3975491), (13, 1529035), (65, 305807), (103, 192985), (515, 38597), (1339, 14845), (2969, 6695)]