388640288

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{639211}}^1$

素因数の和:639240

約数の個数: 24

約数和(自身を含む): 805407120

約数和(自身を除く): 416766832

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 304, 608, 639211, 1278422, 2556844, 5113688, 10227376, 12145009, 20454752, 24290018, 48580036, 97160072, 194320144, 388640288]

約数ペア:

[(1, 388640288), (2, 194320144), (4, 97160072), (8, 48580036), (16, 24290018), (19, 20454752), (32, 12145009), (38, 10227376), (76, 5113688), (152, 2556844), (304, 1278422), (608, 639211)]