19945715

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{691}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 25111296

約数和(自身を除く): 5165581

約数列:

[1, 5, 23, 115, 251, 691, 1255, 3455, 5773, 15893, 28865, 79465, 173441, 867205, 3989143, 19945715]

約数ペア:

[(1, 19945715), (5, 3989143), (23, 867205), (115, 173441), (251, 79465), (691, 28865), (1255, 15893), (3455, 5773)]