212215857

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{1693}}^1$

素因数の和:1877

約数の個数: 32

約数和(自身を含む): 333053952

約数和(自身を除く): 120838095

約数列:

[1, 3, 7, 21, 47, 127, 141, 329, 381, 889, 987, 1693, 2667, 5079, 5969, 11851, 17907, 35553, 41783, 79571, 125349, 215011, 238713, 556997, 645033, 1505077, 1670991, 4515231, 10105517, 30316551, 70738619, 212215857]

約数ペア:

[(1, 212215857), (3, 70738619), (7, 30316551), (21, 10105517), (47, 4515231), (127, 1670991), (141, 1505077), (329, 645033), (381, 556997), (889, 238713), (987, 215011), (1693, 125349), (2667, 79571), (5079, 41783), (5969, 35553), (11851, 17907)]