About the Number

399690906875

399690906874 ← → 399690906876

2進数表記:101110100001111011011110011110011111011

漢数字表記:三千九百九十六億九千九十万六千八百七十五

素因数分解:

5 4 × 13 1 × 131 1 × 137 1 × 2741 1

素因数の和:3042
約数の個数: 80
約数和(自身を含む): 546134406048
約数和(自身を除く): 146443499173

約数列:
[1, 5, 13, 25, 65, 125, 131, 137, 325, 625, 655, 685, 1625, 1703, 1781, 2741, 3275, 3425, 8125, 8515, 8905, 13705, 16375, 17125, 17947, 35633, 42575, 44525, 68525, 81875, 85625, 89735, 178165, 212875, 222625, 233311, 342625, 359071, 375517, 448675, 890825, 1064375, 1113125, 1166555, 1713125, 1795355, 1877585, 2243375, 4454125, 4667923, 4881721, 5832775, 8976775, 9387925, 11216875, 22270625, 23339615, 24408605, 29163875, 44883875, 46939625, 49192727, 116698075, 122043025, 145819375, 224419375, 234698125, 245963635, 583490375, 610215125, 639505451, 1229818175, 2917451875, 3051075625, 3197527255, 6149090875, 15987636275, 30745454375, 79938181375, 399690906875]

約数ペア:
[(1, 399690906875), (5, 79938181375), (13, 30745454375), (25, 15987636275), (65, 6149090875), (125, 3197527255), (131, 3051075625), (137, 2917451875), (325, 1229818175), (625, 639505451), (655, 610215125), (685, 583490375), (1625, 245963635), (1703, 234698125), (1781, 224419375), (2741, 145819375), (3275, 122043025), (3425, 116698075), (8125, 49192727), (8515, 46939625), (8905, 44883875), (13705, 29163875), (16375, 24408605), (17125, 23339615), (17947, 22270625), (35633, 11216875), (42575, 9387925), (44525, 8976775), (68525, 5832775), (81875, 4881721), (85625, 4667923), (89735, 4454125), (178165, 2243375), (212875, 1877585), (222625, 1795355), (233311, 1713125), (342625, 1166555), (359071, 1113125), (375517, 1064375), (448675, 890825)]

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