About the Number

25131990

25131989 ← → 25131991

2進数表記:1011111110111101111010110

漢数字表記:二千五百十三万千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 13 2 × 4957 1

素因数の和:4993
約数の個数: 48
約数和(自身を含む): 65326608
約数和(自身を除く): 40194618

約数列:
[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 169, 195, 338, 390, 507, 845, 1014, 1690, 2535, 4957, 5070, 9914, 14871, 24785, 29742, 49570, 64441, 74355, 128882, 148710, 193323, 322205, 386646, 644410, 837733, 966615, 1675466, 1933230, 2513199, 4188665, 5026398, 8377330, 12565995, 25131990]

約数ペア:
[(1, 25131990), (2, 12565995), (3, 8377330), (5, 5026398), (6, 4188665), (10, 2513199), (13, 1933230), (15, 1675466), (26, 966615), (30, 837733), (39, 644410), (65, 386646), (78, 322205), (130, 193323), (169, 148710), (195, 128882), (338, 74355), (390, 64441), (507, 49570), (845, 29742), (1014, 24785), (1690, 14871), (2535, 9914), (4957, 5070)]

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