129622720

素因数分解:

$2^6\times 5^1\times {\mathrm{405071}}^1$

素因数の和:405088

約数の個数: 28

約数和(自身を含む): 308664864

約数和(自身を除く): 179042144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 405071, 810142, 1620284, 2025355, 3240568, 4050710, 6481136, 8101420, 12962272, 16202840, 25924544, 32405680, 64811360, 129622720]

約数ペア:

[(1, 129622720), (2, 64811360), (4, 32405680), (5, 25924544), (8, 16202840), (10, 12962272), (16, 8101420), (20, 6481136), (32, 4050710), (40, 3240568), (64, 2025355), (80, 1620284), (160, 810142), (320, 405071)]