20178872800

素因数分解:

$2^5\times 5^2\times {\mathrm{29}}^1\times {\mathrm{869779}}^1$

素因数の和:869828

約数の個数: 72

約数和(自身を含む): 50960410200

約数和(自身を除く): 30781537400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 32, 40, 50, 58, 80, 100, 116, 145, 160, 200, 232, 290, 400, 464, 580, 725, 800, 928, 1160, 1450, 2320, 2900, 4640, 5800, 11600, 23200, 869779, 1739558, 3479116, 4348895, 6958232, 8697790, 13916464, 17395580, 21744475, 25223591, 27832928, 34791160, 43488950, 50447182, 69582320, 86977900, 100894364, 126117955, 139164640, 173955800, 201788728, 252235910, 347911600, 403577456, 504471820, 630589775, 695823200, 807154912, 1008943640, 1261179550, 2017887280, 2522359100, 4035774560, 5044718200, 10089436400, 20178872800]

約数ペア:

[(1, 20178872800), (2, 10089436400), (4, 5044718200), (5, 4035774560), (8, 2522359100), (10, 2017887280), (16, 1261179550), (20, 1008943640), (25, 807154912), (29, 695823200), (32, 630589775), (40, 504471820), (50, 403577456), (58, 347911600), (80, 252235910), (100, 201788728), (116, 173955800), (145, 139164640), (160, 126117955), (200, 100894364), (232, 86977900), (290, 69582320), (400, 50447182), (464, 43488950), (580, 34791160), (725, 27832928), (800, 25223591), (928, 21744475), (1160, 17395580), (1450, 13916464), (2320, 8697790), (2900, 6958232), (4640, 4348895), (5800, 3479116), (11600, 1739558), (23200, 869779)]