640476644

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{137}}^1\times {\mathrm{12049}}^1$

素因数の和:12287

約数の個数: 24

約数和(自身を含む): 1140749400

約数和(自身を除く): 500272756

約数列:

[1, 2, 4, 97, 137, 194, 274, 388, 548, 12049, 13289, 24098, 26578, 48196, 53156, 1168753, 1650713, 2337506, 3301426, 4675012, 6602852, 160119161, 320238322, 640476644]

約数ペア:

[(1, 640476644), (2, 320238322), (4, 160119161), (97, 6602852), (137, 4675012), (194, 3301426), (274, 2337506), (388, 1650713), (548, 1168753), (12049, 53156), (13289, 48196), (24098, 26578)]