128485120

素因数分解:

$2^8\times 5^1\times {\mathrm{100379}}^1$

素因数の和:100400

約数の個数: 36

約数和(自身を含む): 307765080

約数和(自身を除く): 179279960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 100379, 200758, 401516, 501895, 803032, 1003790, 1606064, 2007580, 3212128, 4015160, 6424256, 8030320, 12848512, 16060640, 25697024, 32121280, 64242560, 128485120]

約数ペア:

[(1, 128485120), (2, 64242560), (4, 32121280), (5, 25697024), (8, 16060640), (10, 12848512), (16, 8030320), (20, 6424256), (32, 4015160), (40, 3212128), (64, 2007580), (80, 1606064), (128, 1003790), (160, 803032), (256, 501895), (320, 401516), (640, 200758), (1280, 100379)]