21195090

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1979}}^1$

素因数の和:2016

約数の個数: 96

約数和(自身を含む): 66718080

約数和(自身を除く): 45522990

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 30, 34, 35, 42, 45, 51, 63, 70, 85, 90, 102, 105, 119, 126, 153, 170, 210, 238, 255, 306, 315, 357, 510, 595, 630, 714, 765, 1071, 1190, 1530, 1785, 1979, 2142, 3570, 3958, 5355, 5937, 9895, 10710, 11874, 13853, 17811, 19790, 27706, 29685, 33643, 35622, 41559, 59370, 67286, 69265, 83118, 89055, 100929, 124677, 138530, 168215, 178110, 201858, 207795, 235501, 249354, 302787, 336430, 415590, 471002, 504645, 605574, 623385, 706503, 1009290, 1177505, 1246770, 1413006, 1513935, 2119509, 2355010, 3027870, 3532515, 4239018, 7065030, 10597545, 21195090]

約数ペア:

[(1, 21195090), (2, 10597545), (3, 7065030), (5, 4239018), (6, 3532515), (7, 3027870), (9, 2355010), (10, 2119509), (14, 1513935), (15, 1413006), (17, 1246770), (18, 1177505), (21, 1009290), (30, 706503), (34, 623385), (35, 605574), (42, 504645), (45, 471002), (51, 415590), (63, 336430), (70, 302787), (85, 249354), (90, 235501), (102, 207795), (105, 201858), (119, 178110), (126, 168215), (153, 138530), (170, 124677), (210, 100929), (238, 89055), (255, 83118), (306, 69265), (315, 67286), (357, 59370), (510, 41559), (595, 35622), (630, 33643), (714, 29685), (765, 27706), (1071, 19790), (1190, 17811), (1530, 13853), (1785, 11874), (1979, 10710), (2142, 9895), (3570, 5937), (3958, 5355)]