2489984980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{947}}^1\times {\mathrm{2683}}^1$

素因数の和:3653

約数の個数: 72

約数和(自身を含む): 6091370208

約数和(自身を除く): 3601385228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 947, 980, 1894, 2683, 3788, 4735, 5366, 6629, 9470, 10732, 13258, 13415, 18781, 18940, 26516, 26830, 33145, 37562, 46403, 53660, 66290, 75124, 92806, 93905, 131467, 132580, 185612, 187810, 232015, 262934, 375620, 464030, 525868, 657335, 928060, 1314670, 2540801, 2629340, 5081602, 10163204, 12704005, 17785607, 25408010, 35571214, 50816020, 71142428, 88928035, 124499249, 177856070, 248998498, 355712140, 497996996, 622496245, 1244992490, 2489984980]

約数ペア:

[(1, 2489984980), (2, 1244992490), (4, 622496245), (5, 497996996), (7, 355712140), (10, 248998498), (14, 177856070), (20, 124499249), (28, 88928035), (35, 71142428), (49, 50816020), (70, 35571214), (98, 25408010), (140, 17785607), (196, 12704005), (245, 10163204), (490, 5081602), (947, 2629340), (980, 2540801), (1894, 1314670), (2683, 928060), (3788, 657335), (4735, 525868), (5366, 464030), (6629, 375620), (9470, 262934), (10732, 232015), (13258, 187810), (13415, 185612), (18781, 132580), (18940, 131467), (26516, 93905), (26830, 92806), (33145, 75124), (37562, 66290), (46403, 53660)]