21000962884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{258977}}^1$

素因数の和:259108

約数の個数: 48

約数和(自身を含む): 42638137920

約数和(自身を除く): 21637175036

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 97, 194, 209, 388, 418, 836, 1067, 1843, 2134, 3686, 4268, 7372, 20273, 40546, 81092, 258977, 517954, 1035908, 2848747, 4920563, 5697494, 9841126, 11394988, 19682252, 25120769, 50241538, 54126193, 100483076, 108252386, 216504772, 276328459, 477294611, 552656918, 954589222, 1105313836, 1909178444, 5250240721, 10500481442, 21000962884]

約数ペア:

[(1, 21000962884), (2, 10500481442), (4, 5250240721), (11, 1909178444), (19, 1105313836), (22, 954589222), (38, 552656918), (44, 477294611), (76, 276328459), (97, 216504772), (194, 108252386), (209, 100483076), (388, 54126193), (418, 50241538), (836, 25120769), (1067, 19682252), (1843, 11394988), (2134, 9841126), (3686, 5697494), (4268, 4920563), (7372, 2848747), (20273, 1035908), (40546, 517954), (81092, 258977)]