21051291261

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{143063}}^1$

素因数の和:143111

約数の個数: 64

約数和(自身を含む): 38455603200

約数和(自身を除く): 17404311939

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 49, 77, 91, 143, 147, 231, 273, 343, 429, 539, 637, 1001, 1029, 1617, 1911, 3003, 3773, 4459, 7007, 11319, 13377, 21021, 49049, 143063, 147147, 429189, 1001441, 1573693, 1859819, 3004323, 4721079, 5579457, 7010087, 11015851, 13018733, 20458009, 21030261, 33047553, 39056199, 49070609, 61374027, 77110957, 91131131, 143206063, 147211827, 231332871, 273393393, 429618189, 539776699, 637917917, 1002442441, 1619330097, 1913753751, 3007327323, 7017097087, 21051291261]

約数ペア:

[(1, 21051291261), (3, 7017097087), (7, 3007327323), (11, 1913753751), (13, 1619330097), (21, 1002442441), (33, 637917917), (39, 539776699), (49, 429618189), (77, 273393393), (91, 231332871), (143, 147211827), (147, 143206063), (231, 91131131), (273, 77110957), (343, 61374027), (429, 49070609), (539, 39056199), (637, 33047553), (1001, 21030261), (1029, 20458009), (1617, 13018733), (1911, 11015851), (3003, 7010087), (3773, 5579457), (4459, 4721079), (7007, 3004323), (11319, 1859819), (13377, 1573693), (21021, 1001441), (49049, 429189), (143063, 147147)]