79991200

素因数分解:

$2^5\times 5^2\times {\mathrm{99989}}^1$

素因数の和:100009

約数の個数: 36

約数和(自身を含む): 195280470

約数和(自身を除く): 115289270

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 99989, 199978, 399956, 499945, 799912, 999890, 1599824, 1999780, 2499725, 3199648, 3999560, 4999450, 7999120, 9998900, 15998240, 19997800, 39995600, 79991200]

約数ペア:

[(1, 79991200), (2, 39995600), (4, 19997800), (5, 15998240), (8, 9998900), (10, 7999120), (16, 4999450), (20, 3999560), (25, 3199648), (32, 2499725), (40, 1999780), (50, 1599824), (80, 999890), (100, 799912), (160, 499945), (200, 399956), (400, 199978), (800, 99989)]