20199985456

素因数分解:

$2^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1785713}}^1$

素因数の和:1785829

約数の個数: 40

約数和(自身を含む): 45171421344

約数和(自身を除く): 24971435888

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 101, 112, 202, 404, 707, 808, 1414, 1616, 2828, 5656, 11312, 1785713, 3571426, 7142852, 12499991, 14285704, 24999982, 28571408, 49999964, 99999928, 180357013, 199999856, 360714026, 721428052, 1262499091, 1442856104, 2524998182, 2885712208, 5049996364, 10099992728, 20199985456]

約数ペア:

[(1, 20199985456), (2, 10099992728), (4, 5049996364), (7, 2885712208), (8, 2524998182), (14, 1442856104), (16, 1262499091), (28, 721428052), (56, 360714026), (101, 199999856), (112, 180357013), (202, 99999928), (404, 49999964), (707, 28571408), (808, 24999982), (1414, 14285704), (1616, 12499991), (2828, 7142852), (5656, 3571426), (11312, 1785713)]