20217386320

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3559399}}^1$

素因数の和:3559483

約数の個数: 40

約数和(自身を含む): 47667484800

約数和(自身を除く): 27450098480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 3559399, 7118798, 14237596, 17796995, 28475192, 35593990, 56950384, 71187980, 142375960, 252717329, 284751920, 505434658, 1010869316, 1263586645, 2021738632, 2527173290, 4043477264, 5054346580, 10108693160, 20217386320]

約数ペア:

[(1, 20217386320), (2, 10108693160), (4, 5054346580), (5, 4043477264), (8, 2527173290), (10, 2021738632), (16, 1263586645), (20, 1010869316), (40, 505434658), (71, 284751920), (80, 252717329), (142, 142375960), (284, 71187980), (355, 56950384), (568, 35593990), (710, 28475192), (1136, 17796995), (1420, 14237596), (2840, 7118798), (5680, 3559399)]