20741308

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 45505152

約数和(自身を除く): 24763844

約数列:

[1, 2, 4, 7, 14, 23, 28, 43, 46, 49, 86, 92, 98, 107, 161, 172, 196, 214, 301, 322, 428, 602, 644, 749, 989, 1127, 1204, 1498, 1978, 2107, 2254, 2461, 2996, 3956, 4214, 4508, 4601, 4922, 5243, 6923, 8428, 9202, 9844, 10486, 13846, 17227, 18404, 20972, 27692, 32207, 34454, 48461, 64414, 68908, 96922, 105823, 120589, 128828, 193844, 211646, 225449, 241178, 423292, 450898, 482356, 740761, 901796, 1481522, 2963044, 5185327, 10370654, 20741308]

約数ペア:

[(1, 20741308), (2, 10370654), (4, 5185327), (7, 2963044), (14, 1481522), (23, 901796), (28, 740761), (43, 482356), (46, 450898), (49, 423292), (86, 241178), (92, 225449), (98, 211646), (107, 193844), (161, 128828), (172, 120589), (196, 105823), (214, 96922), (301, 68908), (322, 64414), (428, 48461), (602, 34454), (644, 32207), (749, 27692), (989, 20972), (1127, 18404), (1204, 17227), (1498, 13846), (1978, 10486), (2107, 9844), (2254, 9202), (2461, 8428), (2996, 6923), (3956, 5243), (4214, 4922), (4508, 4601)]