208836800

素因数分解:

$2^6\times 5^2\times {\mathrm{130523}}^1$

素因数の和:130545

約数の個数: 42

約数和(自身を含む): 513872988

約数和(自身を除く): 305036188

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 130523, 261046, 522092, 652615, 1044184, 1305230, 2088368, 2610460, 3263075, 4176736, 5220920, 6526150, 8353472, 10441840, 13052300, 20883680, 26104600, 41767360, 52209200, 104418400, 208836800]

約数ペア:

[(1, 208836800), (2, 104418400), (4, 52209200), (5, 41767360), (8, 26104600), (10, 20883680), (16, 13052300), (20, 10441840), (25, 8353472), (32, 6526150), (40, 5220920), (50, 4176736), (64, 3263075), (80, 2610460), (100, 2088368), (160, 1305230), (200, 1044184), (320, 652615), (400, 522092), (800, 261046), (1600, 130523)]