21120412

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1447}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 38314080

約数和(自身を除く): 17193668

約数列:

[1, 2, 4, 41, 82, 89, 164, 178, 356, 1447, 2894, 3649, 5788, 7298, 14596, 59327, 118654, 128783, 237308, 257566, 515132, 5280103, 10560206, 21120412]

約数ペア:

[(1, 21120412), (2, 10560206), (4, 5280103), (41, 515132), (82, 257566), (89, 237308), (164, 128783), (178, 118654), (356, 59327), (1447, 14596), (2894, 7298), (3649, 5788)]