19379815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{223}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 28901376

約数和(自身を除く): 9521561

約数列:

[1, 5, 7, 13, 35, 65, 91, 191, 223, 455, 955, 1115, 1337, 1561, 2483, 2899, 6685, 7805, 12415, 14495, 17381, 20293, 42593, 86905, 101465, 212965, 298151, 553709, 1490755, 2768545, 3875963, 19379815]

約数ペア:

[(1, 19379815), (5, 3875963), (7, 2768545), (13, 1490755), (35, 553709), (65, 298151), (91, 212965), (191, 101465), (223, 86905), (455, 42593), (955, 20293), (1115, 17381), (1337, 14495), (1561, 12415), (2483, 7805), (2899, 6685)]