18929690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{487}}^1$

素因数の和:543

約数の個数: 48

約数和(自身を含む): 38579328

約数和(自身を除く): 19649638

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 169, 230, 299, 338, 487, 598, 845, 974, 1495, 1690, 2435, 2990, 3887, 4870, 6331, 7774, 11201, 12662, 19435, 22402, 31655, 38870, 56005, 63310, 82303, 112010, 145613, 164606, 291226, 411515, 728065, 823030, 1456130, 1892969, 3785938, 9464845, 18929690]

約数ペア:

[(1, 18929690), (2, 9464845), (5, 3785938), (10, 1892969), (13, 1456130), (23, 823030), (26, 728065), (46, 411515), (65, 291226), (115, 164606), (130, 145613), (169, 112010), (230, 82303), (299, 63310), (338, 56005), (487, 38870), (598, 31655), (845, 22402), (974, 19435), (1495, 12662), (1690, 11201), (2435, 7774), (2990, 6331), (3887, 4870)]