21598020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1237}}^1$

素因数の和:1349

約数の個数: 72

約数和(自身を含む): 66242904

約数和(自身を除く): 44644884

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1164, 1237, 1455, 1746, 1940, 2474, 2910, 3492, 3711, 4365, 4948, 5820, 6185, 7422, 8730, 11133, 12370, 14844, 17460, 18555, 22266, 24740, 37110, 44532, 55665, 74220, 111330, 119989, 222660, 239978, 359967, 479956, 599945, 719934, 1079901, 1199890, 1439868, 1799835, 2159802, 2399780, 3599670, 4319604, 5399505, 7199340, 10799010, 21598020]

約数ペア:

[(1, 21598020), (2, 10799010), (3, 7199340), (4, 5399505), (5, 4319604), (6, 3599670), (9, 2399780), (10, 2159802), (12, 1799835), (15, 1439868), (18, 1199890), (20, 1079901), (30, 719934), (36, 599945), (45, 479956), (60, 359967), (90, 239978), (97, 222660), (180, 119989), (194, 111330), (291, 74220), (388, 55665), (485, 44532), (582, 37110), (873, 24740), (970, 22266), (1164, 18555), (1237, 17460), (1455, 14844), (1746, 12370), (1940, 11133), (2474, 8730), (2910, 7422), (3492, 6185), (3711, 5820), (4365, 4948)]