81881345

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 123678720

約数和(自身を除く): 41797375

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 127, 169, 455, 545, 635, 763, 845, 889, 1183, 1417, 1651, 3815, 4445, 5915, 7085, 8255, 9919, 11557, 13843, 18421, 21463, 49595, 57785, 69215, 92105, 96901, 107315, 128947, 150241, 179959, 484505, 644735, 751205, 899795, 1259713, 2339467, 6298565, 11697335, 16376269, 81881345]

約数ペア:

[(1, 81881345), (5, 16376269), (7, 11697335), (13, 6298565), (35, 2339467), (65, 1259713), (91, 899795), (109, 751205), (127, 644735), (169, 484505), (455, 179959), (545, 150241), (635, 128947), (763, 107315), (845, 96901), (889, 92105), (1183, 69215), (1417, 57785), (1651, 49595), (3815, 21463), (4445, 18421), (5915, 13843), (7085, 11557), (8255, 9919)]