21000304

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5939}}^1$

素因数の和:5977

約数の個数: 40

約数和(自身を含む): 46403280

約数和(自身を除く): 25402976

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5939, 11878, 23756, 47512, 77207, 95024, 100963, 154414, 201926, 308828, 403852, 617656, 807704, 1235312, 1312519, 1615408, 2625038, 5250076, 10500152, 21000304]

約数ペア:

[(1, 21000304), (2, 10500152), (4, 5250076), (8, 2625038), (13, 1615408), (16, 1312519), (17, 1235312), (26, 807704), (34, 617656), (52, 403852), (68, 308828), (104, 201926), (136, 154414), (208, 100963), (221, 95024), (272, 77207), (442, 47512), (884, 23756), (1768, 11878), (3536, 5939)]