20187324920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1015459}}^1$

素因数の和:1015548

約数の個数: 64

約数和(自身を含む): 52641446400

約数和(自身を除く): 32454121480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3976, 4970, 9940, 19880, 1015459, 2030918, 4061836, 5077295, 7108213, 8123672, 10154590, 14216426, 20309180, 28432852, 35541065, 40618360, 56865704, 71082130, 72097589, 142164260, 144195178, 284328520, 288390356, 360487945, 504683123, 576780712, 720975890, 1009366246, 1441951780, 2018732492, 2523415615, 2883903560, 4037464984, 5046831230, 10093662460, 20187324920]

約数ペア:

[(1, 20187324920), (2, 10093662460), (4, 5046831230), (5, 4037464984), (7, 2883903560), (8, 2523415615), (10, 2018732492), (14, 1441951780), (20, 1009366246), (28, 720975890), (35, 576780712), (40, 504683123), (56, 360487945), (70, 288390356), (71, 284328520), (140, 144195178), (142, 142164260), (280, 72097589), (284, 71082130), (355, 56865704), (497, 40618360), (568, 35541065), (710, 28432852), (994, 20309180), (1420, 14216426), (1988, 10154590), (2485, 8123672), (2840, 7108213), (3976, 5077295), (4970, 4061836), (9940, 2030918), (19880, 1015459)]