21560568

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 56851200

約数和(自身を除く): 35290632

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 69, 92, 138, 139, 184, 276, 278, 281, 417, 552, 556, 562, 834, 843, 1112, 1124, 1668, 1686, 2248, 3197, 3336, 3372, 6394, 6463, 6744, 9591, 12788, 12926, 19182, 19389, 25576, 25852, 38364, 38778, 39059, 51704, 76728, 77556, 78118, 117177, 155112, 156236, 234354, 312472, 468708, 898357, 937416, 1796714, 2695071, 3593428, 5390142, 7186856, 10780284, 21560568]

約数ペア:

[(1, 21560568), (2, 10780284), (3, 7186856), (4, 5390142), (6, 3593428), (8, 2695071), (12, 1796714), (23, 937416), (24, 898357), (46, 468708), (69, 312472), (92, 234354), (138, 156236), (139, 155112), (184, 117177), (276, 78118), (278, 77556), (281, 76728), (417, 51704), (552, 39059), (556, 38778), (562, 38364), (834, 25852), (843, 25576), (1112, 19389), (1124, 19182), (1668, 12926), (1686, 12788), (2248, 9591), (3197, 6744), (3336, 6463), (3372, 6394)]