21396320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12157}}^1$

素因数の和:12183

約数の個数: 48

約数和(自身を含む): 55148688

約数和(自身を除く): 33752368

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12157, 24314, 48628, 60785, 97256, 121570, 133727, 194512, 243140, 267454, 389024, 486280, 534908, 668635, 972560, 1069816, 1337270, 1945120, 2139632, 2674540, 4279264, 5349080, 10698160, 21396320]

約数ペア:

[(1, 21396320), (2, 10698160), (4, 5349080), (5, 4279264), (8, 2674540), (10, 2139632), (11, 1945120), (16, 1337270), (20, 1069816), (22, 972560), (32, 668635), (40, 534908), (44, 486280), (55, 389024), (80, 267454), (88, 243140), (110, 194512), (160, 133727), (176, 121570), (220, 97256), (352, 60785), (440, 48628), (880, 24314), (1760, 12157)]