21720968

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2707}}^1$

素因数の和:2789

約数の個数: 32

約数和(自身を含む): 43869600

約数和(自身を除く): 22148632

約数列:

[1, 2, 4, 8, 17, 34, 59, 68, 118, 136, 236, 472, 1003, 2006, 2707, 4012, 5414, 8024, 10828, 21656, 46019, 92038, 159713, 184076, 319426, 368152, 638852, 1277704, 2715121, 5430242, 10860484, 21720968]

約数ペア:

[(1, 21720968), (2, 10860484), (4, 5430242), (8, 2715121), (17, 1277704), (34, 638852), (59, 368152), (68, 319426), (118, 184076), (136, 159713), (236, 92038), (472, 46019), (1003, 21656), (2006, 10828), (2707, 8024), (4012, 5414)]