51806680

素因数分解:

$2^3\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1597}}^1$

素因数の和:2419

約数の個数: 32

約数和(自身を含む): 116781840

約数和(自身を除く): 64975160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 811, 1597, 1622, 3194, 3244, 4055, 6388, 6488, 7985, 8110, 12776, 15970, 16220, 31940, 32440, 63880, 1295167, 2590334, 5180668, 6475835, 10361336, 12951670, 25903340, 51806680]

約数ペア:

[(1, 51806680), (2, 25903340), (4, 12951670), (5, 10361336), (8, 6475835), (10, 5180668), (20, 2590334), (40, 1295167), (811, 63880), (1597, 32440), (1622, 31940), (3194, 16220), (3244, 15970), (4055, 12776), (6388, 8110), (6488, 7985)]