1291222940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{43711}}^1$

素因数の和:43938

約数の個数: 48

約数和(自身を含む): 3113693184

約数和(自身を除く): 1822470244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 844, 1055, 1477, 2110, 2954, 4220, 5908, 7385, 14770, 29540, 43711, 87422, 174844, 218555, 305977, 437110, 611954, 874220, 1223908, 1529885, 3059770, 6119540, 9223021, 18446042, 36892084, 46115105, 64561147, 92230210, 129122294, 184460420, 258244588, 322805735, 645611470, 1291222940]

約数ペア:

[(1, 1291222940), (2, 645611470), (4, 322805735), (5, 258244588), (7, 184460420), (10, 129122294), (14, 92230210), (20, 64561147), (28, 46115105), (35, 36892084), (70, 18446042), (140, 9223021), (211, 6119540), (422, 3059770), (844, 1529885), (1055, 1223908), (1477, 874220), (2110, 611954), (2954, 437110), (4220, 305977), (5908, 218555), (7385, 174844), (14770, 87422), (29540, 43711)]