21615672988

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{179407}}^1$

素因数の和:179762

約数の個数: 48

約数和(自身を含む): 46697749504

約数和(自身を除く): 25082076516

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 331, 364, 662, 1324, 2317, 4303, 4634, 8606, 9268, 17212, 30121, 60242, 120484, 179407, 358814, 717628, 1255849, 2332291, 2511698, 4664582, 5023396, 9329164, 16326037, 32652074, 59383717, 65304148, 118767434, 237534868, 415686019, 771988321, 831372038, 1543976642, 1662744076, 3087953284, 5403918247, 10807836494, 21615672988]

約数ペア:

[(1, 21615672988), (2, 10807836494), (4, 5403918247), (7, 3087953284), (13, 1662744076), (14, 1543976642), (26, 831372038), (28, 771988321), (52, 415686019), (91, 237534868), (182, 118767434), (331, 65304148), (364, 59383717), (662, 32652074), (1324, 16326037), (2317, 9329164), (4303, 5023396), (4634, 4664582), (8606, 2511698), (9268, 2332291), (17212, 1255849), (30121, 717628), (60242, 358814), (120484, 179407)]