21261672640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5110979}}^1$

素因数の和:5111009

約数の個数: 56

約数和(自身を含む): 54523934640

約数和(自身を除く): 33262262000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 5110979, 10221958, 20443916, 25554895, 40887832, 51109790, 66442727, 81775664, 102219580, 132885454, 163551328, 204439160, 265770908, 327102656, 332213635, 408878320, 531541816, 664427270, 817756640, 1063083632, 1328854540, 1635513280, 2126167264, 2657709080, 4252334528, 5315418160, 10630836320, 21261672640]

約数ペア:

[(1, 21261672640), (2, 10630836320), (4, 5315418160), (5, 4252334528), (8, 2657709080), (10, 2126167264), (13, 1635513280), (16, 1328854540), (20, 1063083632), (26, 817756640), (32, 664427270), (40, 531541816), (52, 408878320), (64, 332213635), (65, 327102656), (80, 265770908), (104, 204439160), (130, 163551328), (160, 132885454), (208, 102219580), (260, 81775664), (320, 66442727), (416, 51109790), (520, 40887832), (832, 25554895), (1040, 20443916), (2080, 10221958), (4160, 5110979)]