989827120

素因数分解:

$2^4\times 5^1\times {\mathrm{2141}}^1\times {\mathrm{5779}}^1$

素因数の和:7933

約数の個数: 40

約数和(自身を含む): 2302821360

約数和(自身を除く): 1312994240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2141, 4282, 5779, 8564, 10705, 11558, 17128, 21410, 23116, 28895, 34256, 42820, 46232, 57790, 85640, 92464, 115580, 171280, 231160, 462320, 12372839, 24745678, 49491356, 61864195, 98982712, 123728390, 197965424, 247456780, 494913560, 989827120]

約数ペア:

[(1, 989827120), (2, 494913560), (4, 247456780), (5, 197965424), (8, 123728390), (10, 98982712), (16, 61864195), (20, 49491356), (40, 24745678), (80, 12372839), (2141, 462320), (4282, 231160), (5779, 171280), (8564, 115580), (10705, 92464), (11558, 85640), (17128, 57790), (21410, 46232), (23116, 42820), (28895, 34256)]