21128837470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1721}}^1\times {\mathrm{94439}}^1$

素因数の和:96180

約数の個数: 32

約数和(自身を含む): 40981671360

約数和(自身を除く): 19852833890

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 1721, 3442, 8605, 17210, 22373, 44746, 94439, 111865, 188878, 223730, 472195, 944390, 1227707, 2455414, 6138535, 12277070, 162529519, 325059038, 812647595, 1625295190, 2112883747, 4225767494, 10564418735, 21128837470]

約数ペア:

[(1, 21128837470), (2, 10564418735), (5, 4225767494), (10, 2112883747), (13, 1625295190), (26, 812647595), (65, 325059038), (130, 162529519), (1721, 12277070), (3442, 6138535), (8605, 2455414), (17210, 1227707), (22373, 944390), (44746, 472195), (94439, 223730), (111865, 188878)]