19956916

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 44815680

約数和(自身を除く): 24858764

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 49, 76, 92, 98, 133, 161, 196, 233, 266, 322, 437, 466, 532, 644, 874, 931, 932, 1127, 1631, 1748, 1862, 2254, 3059, 3262, 3724, 4427, 4508, 5359, 6118, 6524, 8854, 10718, 11417, 12236, 17708, 21413, 21436, 22834, 30989, 37513, 42826, 45668, 61978, 75026, 85652, 101821, 123956, 150052, 203642, 216923, 262591, 407284, 433846, 525182, 712747, 867692, 1050364, 1425494, 2850988, 4989229, 9978458, 19956916]

約数ペア:

[(1, 19956916), (2, 9978458), (4, 4989229), (7, 2850988), (14, 1425494), (19, 1050364), (23, 867692), (28, 712747), (38, 525182), (46, 433846), (49, 407284), (76, 262591), (92, 216923), (98, 203642), (133, 150052), (161, 123956), (196, 101821), (233, 85652), (266, 75026), (322, 61978), (437, 45668), (466, 42826), (532, 37513), (644, 30989), (874, 22834), (931, 21436), (932, 21413), (1127, 17708), (1631, 12236), (1748, 11417), (1862, 10718), (2254, 8854), (3059, 6524), (3262, 6118), (3724, 5359), (4427, 4508)]