19981794

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:295

約数の個数: 64

約数和(自身を含む): 47923200

約数和(自身を除く): 27941406

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 62, 93, 103, 149, 186, 206, 217, 298, 309, 434, 447, 618, 651, 721, 894, 1043, 1302, 1442, 2086, 2163, 3129, 3193, 4326, 4619, 6258, 6386, 9238, 9579, 13857, 15347, 19158, 22351, 27714, 30694, 32333, 44702, 46041, 64666, 67053, 92082, 96999, 107429, 134106, 193998, 214858, 322287, 475757, 644574, 951514, 1427271, 2854542, 3330299, 6660598, 9990897, 19981794]

約数ペア:

[(1, 19981794), (2, 9990897), (3, 6660598), (6, 3330299), (7, 2854542), (14, 1427271), (21, 951514), (31, 644574), (42, 475757), (62, 322287), (93, 214858), (103, 193998), (149, 134106), (186, 107429), (206, 96999), (217, 92082), (298, 67053), (309, 64666), (434, 46041), (447, 44702), (618, 32333), (651, 30694), (721, 27714), (894, 22351), (1043, 19158), (1302, 15347), (1442, 13857), (2086, 9579), (2163, 9238), (3129, 6386), (3193, 6258), (4326, 4619)]