21225180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20809}}^1$

素因数の和:20838

約数の個数: 48

約数和(自身を含む): 62929440

約数和(自身を除く): 41704260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20809, 41618, 62427, 83236, 104045, 124854, 208090, 249708, 312135, 353753, 416180, 624270, 707506, 1061259, 1248540, 1415012, 1768765, 2122518, 3537530, 4245036, 5306295, 7075060, 10612590, 21225180]

約数ペア:

[(1, 21225180), (2, 10612590), (3, 7075060), (4, 5306295), (5, 4245036), (6, 3537530), (10, 2122518), (12, 1768765), (15, 1415012), (17, 1248540), (20, 1061259), (30, 707506), (34, 624270), (51, 416180), (60, 353753), (68, 312135), (85, 249708), (102, 208090), (170, 124854), (204, 104045), (255, 83236), (340, 62427), (510, 41618), (1020, 20809)]