640426924

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{23027}}^1$

素因数の和:23457

約数の個数: 24

約数和(自身を含む): 1189626480

約数和(自身を除く): 549199556

約数列:

[1, 2, 4, 17, 34, 68, 409, 818, 1636, 6953, 13906, 23027, 27812, 46054, 92108, 391459, 782918, 1565836, 9418043, 18836086, 37672172, 160106731, 320213462, 640426924]

約数ペア:

[(1, 640426924), (2, 320213462), (4, 160106731), (17, 37672172), (34, 18836086), (68, 9418043), (409, 1565836), (818, 782918), (1636, 391459), (6953, 92108), (13906, 46054), (23027, 27812)]