289915840

素因数分解:

$2^6\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1409}}^1$

素因数の和:2069

約数の個数: 56

約数和(自身を含む): 691926480

約数和(自身を除く): 402010640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 643, 1286, 1409, 2572, 2818, 3215, 5144, 5636, 6430, 7045, 10288, 11272, 12860, 14090, 20576, 22544, 25720, 28180, 41152, 45088, 51440, 56360, 90176, 102880, 112720, 205760, 225440, 450880, 905987, 1811974, 3623948, 4529935, 7247896, 9059870, 14495792, 18119740, 28991584, 36239480, 57983168, 72478960, 144957920, 289915840]

約数ペア:

[(1, 289915840), (2, 144957920), (4, 72478960), (5, 57983168), (8, 36239480), (10, 28991584), (16, 18119740), (20, 14495792), (32, 9059870), (40, 7247896), (64, 4529935), (80, 3623948), (160, 1811974), (320, 905987), (643, 450880), (1286, 225440), (1409, 205760), (2572, 112720), (2818, 102880), (3215, 90176), (5144, 56360), (5636, 51440), (6430, 45088), (7045, 41152), (10288, 28180), (11272, 25720), (12860, 22544), (14090, 20576)]