89421440

素因数分解:

$2^7\times 5^1\times {\mathrm{139721}}^1$

素因数の和:139740

約数の個数: 32

約数和(自身を含む): 213774660

約数和(自身を除く): 124353220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 139721, 279442, 558884, 698605, 1117768, 1397210, 2235536, 2794420, 4471072, 5588840, 8942144, 11177680, 17884288, 22355360, 44710720, 89421440]

約数ペア:

[(1, 89421440), (2, 44710720), (4, 22355360), (5, 17884288), (8, 11177680), (10, 8942144), (16, 5588840), (20, 4471072), (32, 2794420), (40, 2235536), (64, 1397210), (80, 1117768), (128, 698605), (160, 558884), (320, 279442), (640, 139721)]