21476984

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2357}}^1$

素因数の和:2447

約数の個数: 32

約数和(自身を含む): 43292880

約数和(自身を除く): 21815896

約数列:

[1, 2, 4, 8, 17, 34, 67, 68, 134, 136, 268, 536, 1139, 2278, 2357, 4556, 4714, 9112, 9428, 18856, 40069, 80138, 157919, 160276, 315838, 320552, 631676, 1263352, 2684623, 5369246, 10738492, 21476984]

約数ペア:

[(1, 21476984), (2, 10738492), (4, 5369246), (8, 2684623), (17, 1263352), (34, 631676), (67, 320552), (68, 315838), (134, 160276), (136, 157919), (268, 80138), (536, 40069), (1139, 18856), (2278, 9428), (2357, 9112), (4556, 4714)]