20128946800

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{2187929}}^1$

素因数の和:2187970

約数の個数: 60

約数和(自身を含む): 50462417520

約数和(自身を除く): 30333470720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 184, 200, 230, 368, 400, 460, 575, 920, 1150, 1840, 2300, 4600, 9200, 2187929, 4375858, 8751716, 10939645, 17503432, 21879290, 35006864, 43758580, 50322367, 54698225, 87517160, 100644734, 109396450, 175034320, 201289468, 218792900, 251611835, 402578936, 437585800, 503223670, 805157872, 875171600, 1006447340, 1258059175, 2012894680, 2516118350, 4025789360, 5032236700, 10064473400, 20128946800]

約数ペア:

[(1, 20128946800), (2, 10064473400), (4, 5032236700), (5, 4025789360), (8, 2516118350), (10, 2012894680), (16, 1258059175), (20, 1006447340), (23, 875171600), (25, 805157872), (40, 503223670), (46, 437585800), (50, 402578936), (80, 251611835), (92, 218792900), (100, 201289468), (115, 175034320), (184, 109396450), (200, 100644734), (230, 87517160), (368, 54698225), (400, 50322367), (460, 43758580), (575, 35006864), (920, 21879290), (1150, 17503432), (1840, 10939645), (2300, 8751716), (4600, 4375858), (9200, 2187929)]