20371376

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:509

約数の個数: 40

約数和(自身を含む): 41541984

約数和(自身を除く): 21170608

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 197, 281, 368, 394, 562, 788, 1124, 1576, 2248, 3152, 4496, 4531, 6463, 9062, 12926, 18124, 25852, 36248, 51704, 55357, 72496, 103408, 110714, 221428, 442856, 885712, 1273211, 2546422, 5092844, 10185688, 20371376]

約数ペア:

[(1, 20371376), (2, 10185688), (4, 5092844), (8, 2546422), (16, 1273211), (23, 885712), (46, 442856), (92, 221428), (184, 110714), (197, 103408), (281, 72496), (368, 55357), (394, 51704), (562, 36248), (788, 25852), (1124, 18124), (1576, 12926), (2248, 9062), (3152, 6463), (4496, 4531)]