661613394

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{197261}}^1$

素因数の和:197322

約数の個数: 32

約数和(自身を含む): 1458160704

約数和(自身を除く): 796547310

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 258, 559, 1118, 1677, 3354, 197261, 394522, 591783, 1183566, 2564393, 5128786, 7693179, 8482223, 15386358, 16964446, 25446669, 50893338, 110268899, 220537798, 330806697, 661613394]

約数ペア:

[(1, 661613394), (2, 330806697), (3, 220537798), (6, 110268899), (13, 50893338), (26, 25446669), (39, 16964446), (43, 15386358), (78, 8482223), (86, 7693179), (129, 5128786), (258, 2564393), (559, 1183566), (1118, 591783), (1677, 394522), (3354, 197261)]