20700272

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{457}}^1$

素因数の和:633

約数の個数: 40

約数和(自身を含む): 42594000

約数和(自身を除く): 21893728

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 149, 152, 298, 304, 457, 596, 914, 1192, 1828, 2384, 2831, 3656, 5662, 7312, 8683, 11324, 17366, 22648, 34732, 45296, 68093, 69464, 136186, 138928, 272372, 544744, 1089488, 1293767, 2587534, 5175068, 10350136, 20700272]

約数ペア:

[(1, 20700272), (2, 10350136), (4, 5175068), (8, 2587534), (16, 1293767), (19, 1089488), (38, 544744), (76, 272372), (149, 138928), (152, 136186), (298, 69464), (304, 68093), (457, 45296), (596, 34732), (914, 22648), (1192, 17366), (1828, 11324), (2384, 8683), (2831, 7312), (3656, 5662)]