19890117

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{1453}}^1$

素因数の和:1491

約数の個数: 30

約数和(自身を含む): 32195922

約数和(自身を除く): 12305805

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 351, 507, 1053, 1453, 1521, 4359, 4563, 13077, 13689, 18889, 39231, 56667, 117693, 170001, 245557, 510003, 736671, 1530009, 2210013, 6630039, 19890117]

約数ペア:

[(1, 19890117), (3, 6630039), (9, 2210013), (13, 1530009), (27, 736671), (39, 510003), (81, 245557), (117, 170001), (169, 117693), (351, 56667), (507, 39231), (1053, 18889), (1453, 13689), (1521, 13077), (4359, 4563)]