21960549

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 36966384

約数和(自身を除く): 15005835

約数列:

[1, 3, 9, 13, 17, 39, 51, 61, 117, 153, 181, 183, 221, 543, 549, 663, 793, 1037, 1629, 1989, 2353, 2379, 3077, 3111, 7059, 7137, 9231, 9333, 11041, 13481, 21177, 27693, 33123, 40001, 40443, 99369, 120003, 121329, 143533, 187697, 360009, 430599, 563091, 1291797, 1689273, 2440061, 7320183, 21960549]

約数ペア:

[(1, 21960549), (3, 7320183), (9, 2440061), (13, 1689273), (17, 1291797), (39, 563091), (51, 430599), (61, 360009), (117, 187697), (153, 143533), (181, 121329), (183, 120003), (221, 99369), (543, 40443), (549, 40001), (663, 33123), (793, 27693), (1037, 21177), (1629, 13481), (1989, 11041), (2353, 9333), (2379, 9231), (3077, 7137), (3111, 7059)]