19797855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:368

約数の個数: 64

約数和(自身を含む): 40283136

約数和(自身を除く): 20485281

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 61, 77, 105, 165, 183, 231, 281, 305, 385, 427, 671, 843, 915, 1155, 1281, 1405, 1967, 2013, 2135, 3091, 3355, 4215, 4697, 5901, 6405, 9273, 9835, 10065, 14091, 15455, 17141, 21637, 23485, 29505, 46365, 51423, 64911, 70455, 85705, 108185, 119987, 188551, 257115, 324555, 359961, 565653, 599935, 942755, 1319857, 1799805, 2828265, 3959571, 6599285, 19797855]

約数ペア:

[(1, 19797855), (3, 6599285), (5, 3959571), (7, 2828265), (11, 1799805), (15, 1319857), (21, 942755), (33, 599935), (35, 565653), (55, 359961), (61, 324555), (77, 257115), (105, 188551), (165, 119987), (183, 108185), (231, 85705), (281, 70455), (305, 64911), (385, 51423), (427, 46365), (671, 29505), (843, 23485), (915, 21637), (1155, 17141), (1281, 15455), (1405, 14091), (1967, 10065), (2013, 9835), (2135, 9273), (3091, 6405), (3355, 5901), (4215, 4697)]