204801905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 319334400

約数和(自身を除く): 114532495

約数列:

[1, 5, 7, 11, 35, 43, 55, 77, 89, 139, 215, 301, 385, 445, 473, 623, 695, 973, 979, 1505, 1529, 2365, 3115, 3311, 3827, 4865, 4895, 5977, 6853, 7645, 10703, 12371, 16555, 19135, 26789, 29885, 34265, 41839, 42097, 53515, 61855, 65747, 86597, 133945, 136081, 209195, 210485, 294679, 328735, 432985, 460229, 531953, 680405, 952567, 1473395, 2301145, 2659765, 3723671, 4762835, 5851483, 18618355, 29257415, 40960381, 204801905]

約数ペア:

[(1, 204801905), (5, 40960381), (7, 29257415), (11, 18618355), (35, 5851483), (43, 4762835), (55, 3723671), (77, 2659765), (89, 2301145), (139, 1473395), (215, 952567), (301, 680405), (385, 531953), (445, 460229), (473, 432985), (623, 328735), (695, 294679), (973, 210485), (979, 209195), (1505, 136081), (1529, 133945), (2365, 86597), (3115, 65747), (3311, 61855), (3827, 53515), (4865, 42097), (4895, 41839), (5977, 34265), (6853, 29885), (7645, 26789), (10703, 19135), (12371, 16555)]