20523678

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:377

約数の個数: 64

約数和(自身を含む): 49379328

約数和(自身を除く): 28855650

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 47, 74, 94, 111, 141, 222, 259, 281, 282, 329, 518, 562, 658, 777, 843, 987, 1554, 1686, 1739, 1967, 1974, 3478, 3934, 5217, 5901, 10397, 10434, 11802, 12173, 13207, 20794, 24346, 26414, 31191, 36519, 39621, 62382, 72779, 73038, 79242, 92449, 145558, 184898, 218337, 277347, 436674, 488659, 554694, 977318, 1465977, 2931954, 3420613, 6841226, 10261839, 20523678]

約数ペア:

[(1, 20523678), (2, 10261839), (3, 6841226), (6, 3420613), (7, 2931954), (14, 1465977), (21, 977318), (37, 554694), (42, 488659), (47, 436674), (74, 277347), (94, 218337), (111, 184898), (141, 145558), (222, 92449), (259, 79242), (281, 73038), (282, 72779), (329, 62382), (518, 39621), (562, 36519), (658, 31191), (777, 26414), (843, 24346), (987, 20794), (1554, 13207), (1686, 12173), (1739, 11802), (1967, 10434), (1974, 10397), (3478, 5901), (3934, 5217)]