128440564

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{21139}}^1$

素因数の和:21188

約数の個数: 36

約数和(自身を含む): 269915520

約数和(自身を除く): 141474956

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 6076, 21139, 42278, 84556, 147973, 295946, 591892, 655309, 1035811, 1310618, 2071622, 2621236, 4143244, 4587163, 9174326, 18348652, 32110141, 64220282, 128440564]

約数ペア:

[(1, 128440564), (2, 64220282), (4, 32110141), (7, 18348652), (14, 9174326), (28, 4587163), (31, 4143244), (49, 2621236), (62, 2071622), (98, 1310618), (124, 1035811), (196, 655309), (217, 591892), (434, 295946), (868, 147973), (1519, 84556), (3038, 42278), (6076, 21139)]