981628564

素因数分解:

$2^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:557

約数の個数: 72

約数和(自身を含む): 2035091520

約数和(自身を除く): 1053462956

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 137, 139, 196, 263, 274, 278, 526, 548, 556, 959, 973, 1052, 1841, 1918, 1946, 3682, 3836, 3892, 6713, 6811, 7364, 12887, 13426, 13622, 19043, 25774, 26852, 27244, 36031, 36557, 38086, 51548, 72062, 73114, 76172, 133301, 144124, 146228, 252217, 255899, 266602, 504434, 511798, 533204, 933107, 1008868, 1023596, 1765519, 1791293, 1866214, 3531038, 3582586, 3732428, 5008309, 7062076, 7165172, 10016618, 20033236, 35058163, 70116326, 140232652, 245407141, 490814282, 981628564]

約数ペア:

[(1, 981628564), (2, 490814282), (4, 245407141), (7, 140232652), (14, 70116326), (28, 35058163), (49, 20033236), (98, 10016618), (137, 7165172), (139, 7062076), (196, 5008309), (263, 3732428), (274, 3582586), (278, 3531038), (526, 1866214), (548, 1791293), (556, 1765519), (959, 1023596), (973, 1008868), (1052, 933107), (1841, 533204), (1918, 511798), (1946, 504434), (3682, 266602), (3836, 255899), (3892, 252217), (6713, 146228), (6811, 144124), (7364, 133301), (12887, 76172), (13426, 73114), (13622, 72062), (19043, 51548), (25774, 38086), (26852, 36557), (27244, 36031)]