19487715

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 34983648

約数和(自身を除く): 15495933

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 73, 111, 185, 195, 219, 365, 481, 555, 949, 1095, 1369, 1443, 2405, 2701, 2847, 4107, 4745, 6845, 7215, 8103, 13505, 14235, 17797, 20535, 35113, 40515, 53391, 88985, 99937, 105339, 175565, 266955, 299811, 499685, 526695, 1299181, 1499055, 3897543, 6495905, 19487715]

約数ペア:

[(1, 19487715), (3, 6495905), (5, 3897543), (13, 1499055), (15, 1299181), (37, 526695), (39, 499685), (65, 299811), (73, 266955), (111, 175565), (185, 105339), (195, 99937), (219, 88985), (365, 53391), (481, 40515), (555, 35113), (949, 20535), (1095, 17797), (1369, 14235), (1443, 13505), (2405, 8103), (2701, 7215), (2847, 6845), (4107, 4745)]