21000272968

素因数分解:

$2^3\times {\mathrm{137}}^1\times {\mathrm{2549}}^1\times {\mathrm{7517}}^1$

素因数の和:10209

約数の個数: 32

約数和(自身を含む): 39683763000

約数和(自身を除く): 18683490032

約数列:

[1, 2, 4, 8, 137, 274, 548, 1096, 2549, 5098, 7517, 10196, 15034, 20392, 30068, 60136, 349213, 698426, 1029829, 1396852, 2059658, 2793704, 4119316, 8238632, 19160833, 38321666, 76643332, 153286664, 2625034121, 5250068242, 10500136484, 21000272968]

約数ペア:

[(1, 21000272968), (2, 10500136484), (4, 5250068242), (8, 2625034121), (137, 153286664), (274, 76643332), (548, 38321666), (1096, 19160833), (2549, 8238632), (5098, 4119316), (7517, 2793704), (10196, 2059658), (15034, 1396852), (20392, 1029829), (30068, 698426), (60136, 349213)]