21376538

素因数分解:

$2^1\times {\mathrm{29}}^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:310

約数の個数: 24

約数和(自身を含む): 33864480

約数和(自身を除く): 12487942

約数列:

[1, 2, 29, 58, 71, 142, 179, 358, 841, 1682, 2059, 4118, 5191, 10382, 12709, 25418, 59711, 119422, 150539, 301078, 368561, 737122, 10688269, 21376538]

約数ペア:

[(1, 21376538), (2, 10688269), (29, 737122), (58, 368561), (71, 301078), (142, 150539), (179, 119422), (358, 59711), (841, 25418), (1682, 12709), (2059, 10382), (4118, 5191)]