20734400

素因数分解:

$2^6\times 5^2\times {\mathrm{12959}}^1$

素因数の和:12981

約数の個数: 42

約数和(自身を含む): 51023520

約数和(自身を除く): 30289120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12959, 25918, 51836, 64795, 103672, 129590, 207344, 259180, 323975, 414688, 518360, 647950, 829376, 1036720, 1295900, 2073440, 2591800, 4146880, 5183600, 10367200, 20734400]

約数ペア:

[(1, 20734400), (2, 10367200), (4, 5183600), (5, 4146880), (8, 2591800), (10, 2073440), (16, 1295900), (20, 1036720), (25, 829376), (32, 647950), (40, 518360), (50, 414688), (64, 323975), (80, 259180), (100, 207344), (160, 129590), (200, 103672), (320, 64795), (400, 51836), (800, 25918), (1600, 12959)]