About the Number

21087090

21087089 ← → 21087091

2進数表記:1010000011100001101110010

漢数字表記:二千百八万七千九十

素因数分解:

2 1 × 3 2 × 5 1 × 23 1 × 61 1 × 167 1

素因数の和:264
約数の個数: 96
約数和(自身を含む): 58496256
約数和(自身を除く): 37409166

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 61, 69, 90, 115, 122, 138, 167, 183, 207, 230, 305, 334, 345, 366, 414, 501, 549, 610, 690, 835, 915, 1002, 1035, 1098, 1403, 1503, 1670, 1830, 2070, 2505, 2745, 2806, 3006, 3841, 4209, 5010, 5490, 7015, 7515, 7682, 8418, 10187, 11523, 12627, 14030, 15030, 19205, 20374, 21045, 23046, 25254, 30561, 34569, 38410, 42090, 50935, 57615, 61122, 63135, 69138, 91683, 101870, 115230, 126270, 152805, 172845, 183366, 234301, 305610, 345690, 458415, 468602, 702903, 916830, 1171505, 1405806, 2108709, 2343010, 3514515, 4217418, 7029030, 10543545, 21087090]

約数ペア:
[(1, 21087090), (2, 10543545), (3, 7029030), (5, 4217418), (6, 3514515), (9, 2343010), (10, 2108709), (15, 1405806), (18, 1171505), (23, 916830), (30, 702903), (45, 468602), (46, 458415), (61, 345690), (69, 305610), (90, 234301), (115, 183366), (122, 172845), (138, 152805), (167, 126270), (183, 115230), (207, 101870), (230, 91683), (305, 69138), (334, 63135), (345, 61122), (366, 57615), (414, 50935), (501, 42090), (549, 38410), (610, 34569), (690, 30561), (835, 25254), (915, 23046), (1002, 21045), (1035, 20374), (1098, 19205), (1403, 15030), (1503, 14030), (1670, 12627), (1830, 11523), (2070, 10187), (2505, 8418), (2745, 7682), (2806, 7515), (3006, 7015), (3841, 5490), (4209, 5010)]

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