21748740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27883}}^1$

素因数の和:27908

約数の個数: 48

約数和(自身を含む): 65583168

約数和(自身を除く): 43834428

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27883, 55766, 83649, 111532, 139415, 167298, 278830, 334596, 362479, 418245, 557660, 724958, 836490, 1087437, 1449916, 1672980, 1812395, 2174874, 3624790, 4349748, 5437185, 7249580, 10874370, 21748740]

約数ペア:

[(1, 21748740), (2, 10874370), (3, 7249580), (4, 5437185), (5, 4349748), (6, 3624790), (10, 2174874), (12, 1812395), (13, 1672980), (15, 1449916), (20, 1087437), (26, 836490), (30, 724958), (39, 557660), (52, 418245), (60, 362479), (65, 334596), (78, 278830), (130, 167298), (156, 139415), (195, 111532), (260, 83649), (390, 55766), (780, 27883)]