128911360

素因数分解:

$2^{11}\times 5^1\times {\mathrm{12589}}^1$

素因数の和:12616

約数の個数: 48

約数和(自身を含む): 309336300

約数和(自身を除く): 180424940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 10240, 12589, 25178, 50356, 62945, 100712, 125890, 201424, 251780, 402848, 503560, 805696, 1007120, 1611392, 2014240, 3222784, 4028480, 6445568, 8056960, 12891136, 16113920, 25782272, 32227840, 64455680, 128911360]

約数ペア:

[(1, 128911360), (2, 64455680), (4, 32227840), (5, 25782272), (8, 16113920), (10, 12891136), (16, 8056960), (20, 6445568), (32, 4028480), (40, 3222784), (64, 2014240), (80, 1611392), (128, 1007120), (160, 805696), (256, 503560), (320, 402848), (512, 251780), (640, 201424), (1024, 125890), (1280, 100712), (2048, 62945), (2560, 50356), (5120, 25178), (10240, 12589)]