639425668

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:533

約数の個数: 96

約数和(自身を含む): 1392910848

約数和(自身を除く): 753485180

約数列:

[1, 2, 4, 7, 14, 23, 28, 41, 46, 61, 82, 92, 122, 161, 164, 244, 287, 322, 397, 427, 574, 644, 794, 854, 943, 1148, 1403, 1588, 1708, 1886, 2501, 2779, 2806, 3772, 5002, 5558, 5612, 6601, 9131, 9821, 10004, 11116, 13202, 16277, 17507, 18262, 19642, 24217, 26404, 32554, 35014, 36524, 39284, 48434, 57523, 63917, 65108, 70028, 96868, 113939, 115046, 127834, 169519, 227878, 230092, 255668, 339038, 374371, 402661, 455756, 556991, 678076, 748742, 805322, 992897, 1113982, 1497484, 1610644, 1985794, 2227964, 2620597, 3898937, 3971588, 5241194, 6950279, 7797874, 10482388, 13900558, 15595748, 22836631, 27801116, 45673262, 91346524, 159856417, 319712834, 639425668]

約数ペア:

[(1, 639425668), (2, 319712834), (4, 159856417), (7, 91346524), (14, 45673262), (23, 27801116), (28, 22836631), (41, 15595748), (46, 13900558), (61, 10482388), (82, 7797874), (92, 6950279), (122, 5241194), (161, 3971588), (164, 3898937), (244, 2620597), (287, 2227964), (322, 1985794), (397, 1610644), (427, 1497484), (574, 1113982), (644, 992897), (794, 805322), (854, 748742), (943, 678076), (1148, 556991), (1403, 455756), (1588, 402661), (1708, 374371), (1886, 339038), (2501, 255668), (2779, 230092), (2806, 227878), (3772, 169519), (5002, 127834), (5558, 115046), (5612, 113939), (6601, 96868), (9131, 70028), (9821, 65108), (10004, 63917), (11116, 57523), (13202, 48434), (16277, 39284), (17507, 36524), (18262, 35014), (19642, 32554), (24217, 26404)]