19131515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 26320896

約数和(自身を除く): 7189381

約数列:

[1, 5, 13, 23, 65, 67, 115, 191, 299, 335, 871, 955, 1495, 1541, 2483, 4355, 4393, 7705, 12415, 12797, 20033, 21965, 57109, 63985, 100165, 166361, 285545, 294331, 831805, 1471655, 3826303, 19131515]

約数ペア:

[(1, 19131515), (5, 3826303), (13, 1471655), (23, 831805), (65, 294331), (67, 285545), (115, 166361), (191, 100165), (299, 63985), (335, 57109), (871, 21965), (955, 20033), (1495, 12797), (1541, 12415), (2483, 7705), (4355, 4393)]