128856320

素因数分解:

$2^8\times 5^1\times {\mathrm{100669}}^1$

素因数の和:100690

約数の個数: 36

約数和(自身を含む): 308654220

約数和(自身を除く): 179797900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 100669, 201338, 402676, 503345, 805352, 1006690, 1610704, 2013380, 3221408, 4026760, 6442816, 8053520, 12885632, 16107040, 25771264, 32214080, 64428160, 128856320]

約数ペア:

[(1, 128856320), (2, 64428160), (4, 32214080), (5, 25771264), (8, 16107040), (10, 12885632), (16, 8053520), (20, 6442816), (32, 4026760), (40, 3221408), (64, 2013380), (80, 1610704), (128, 1006690), (160, 805352), (256, 503345), (320, 402676), (640, 201338), (1280, 100669)]