1900180009

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{487}}^1\times {\mathrm{809}}^1$

素因数の和:1369

約数の個数: 32

約数和(自身を含む): 2390653440

約数和(自身を除く): 490473431

約数列:

[1, 7, 13, 53, 91, 371, 487, 689, 809, 3409, 4823, 5663, 6331, 10517, 25811, 42877, 44317, 73619, 180677, 300139, 335543, 393983, 557401, 2348801, 2757881, 3901807, 5121779, 20881099, 35852453, 146167693, 271454287, 1900180009]

約数ペア:

[(1, 1900180009), (7, 271454287), (13, 146167693), (53, 35852453), (91, 20881099), (371, 5121779), (487, 3901807), (689, 2757881), (809, 2348801), (3409, 557401), (4823, 393983), (5663, 335543), (6331, 300139), (10517, 180677), (25811, 73619), (42877, 44317)]