About the Number

1994720931

1994720930 ← → 1994720932

2進数表記:1110110111001010000011010100011

漢数字表記:十九億九千四百七十二万九百三十一

素因数分解:

3 3 × 7 1 × 23 2 × 71 1 × 281 1

素因数の和:414
約数の個数: 96
約数和(自身を含む): 3592995840
約数和(自身を除く): 1598274909

約数列:
[1, 3, 7, 9, 21, 23, 27, 63, 69, 71, 161, 189, 207, 213, 281, 483, 497, 529, 621, 639, 843, 1449, 1491, 1587, 1633, 1917, 1967, 2529, 3703, 4347, 4473, 4761, 4899, 5901, 6463, 7587, 11109, 11431, 13419, 14283, 14697, 17703, 19389, 19951, 33327, 34293, 37559, 44091, 45241, 53109, 58167, 59853, 99981, 102879, 112677, 135723, 139657, 148649, 174501, 179559, 262913, 308637, 338031, 407169, 418971, 445947, 458873, 538677, 788739, 1014093, 1040543, 1221507, 1256913, 1337841, 1376619, 2366217, 3121629, 3212111, 3770739, 4013523, 4129857, 7098651, 9364887, 9636333, 10554079, 12389571, 28094661, 28908999, 31662237, 73878553, 86726997, 94986711, 221635659, 284960133, 664906977, 1994720931]

約数ペア:
[(1, 1994720931), (3, 664906977), (7, 284960133), (9, 221635659), (21, 94986711), (23, 86726997), (27, 73878553), (63, 31662237), (69, 28908999), (71, 28094661), (161, 12389571), (189, 10554079), (207, 9636333), (213, 9364887), (281, 7098651), (483, 4129857), (497, 4013523), (529, 3770739), (621, 3212111), (639, 3121629), (843, 2366217), (1449, 1376619), (1491, 1337841), (1587, 1256913), (1633, 1221507), (1917, 1040543), (1967, 1014093), (2529, 788739), (3703, 538677), (4347, 458873), (4473, 445947), (4761, 418971), (4899, 407169), (5901, 338031), (6463, 308637), (7587, 262913), (11109, 179559), (11431, 174501), (13419, 148649), (14283, 139657), (14697, 135723), (17703, 112677), (19389, 102879), (19951, 99981), (33327, 59853), (34293, 58167), (37559, 53109), (44091, 45241)]

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