21391068620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1\times {\mathrm{33601}}^1$

素因数の和:33978

約数の個数: 48

約数和(自身を含む): 45443344800

約数和(自身を除く): 24052276180

約数列:

[1, 2, 4, 5, 10, 20, 139, 229, 278, 458, 556, 695, 916, 1145, 1390, 2290, 2780, 4580, 31831, 33601, 63662, 67202, 127324, 134404, 159155, 168005, 318310, 336010, 636620, 672020, 4670539, 7694629, 9341078, 15389258, 18682156, 23352695, 30778516, 38473145, 46705390, 76946290, 93410780, 153892580, 1069553431, 2139106862, 4278213724, 5347767155, 10695534310, 21391068620]

約数ペア:

[(1, 21391068620), (2, 10695534310), (4, 5347767155), (5, 4278213724), (10, 2139106862), (20, 1069553431), (139, 153892580), (229, 93410780), (278, 76946290), (458, 46705390), (556, 38473145), (695, 30778516), (916, 23352695), (1145, 18682156), (1390, 15389258), (2290, 9341078), (2780, 7694629), (4580, 4670539), (31831, 672020), (33601, 636620), (63662, 336010), (67202, 318310), (127324, 168005), (134404, 159155)]