20674185

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 40888320

約数和(自身を除く): 20214135

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 43, 57, 95, 105, 129, 133, 215, 241, 285, 301, 399, 645, 665, 723, 817, 903, 1205, 1505, 1687, 1995, 2451, 3615, 4085, 4515, 4579, 5061, 5719, 8435, 10363, 12255, 13737, 17157, 22895, 25305, 28595, 31089, 32053, 51815, 68685, 72541, 85785, 96159, 155445, 160265, 196897, 217623, 362705, 480795, 590691, 984485, 1088115, 1378279, 2953455, 4134837, 6891395, 20674185]

約数ペア:

[(1, 20674185), (3, 6891395), (5, 4134837), (7, 2953455), (15, 1378279), (19, 1088115), (21, 984485), (35, 590691), (43, 480795), (57, 362705), (95, 217623), (105, 196897), (129, 160265), (133, 155445), (215, 96159), (241, 85785), (285, 72541), (301, 68685), (399, 51815), (645, 32053), (665, 31089), (723, 28595), (817, 25305), (903, 22895), (1205, 17157), (1505, 13737), (1687, 12255), (1995, 10363), (2451, 8435), (3615, 5719), (4085, 5061), (4515, 4579)]