20491140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{523}}^1\times {\mathrm{653}}^1$

素因数の和:1188

約数の個数: 48

約数和(自身を含む): 57572928

約数和(自身を除く): 37081788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 523, 653, 1046, 1306, 1569, 1959, 2092, 2612, 2615, 3138, 3265, 3918, 5230, 6276, 6530, 7836, 7845, 9795, 10460, 13060, 15690, 19590, 31380, 39180, 341519, 683038, 1024557, 1366076, 1707595, 2049114, 3415190, 4098228, 5122785, 6830380, 10245570, 20491140]

約数ペア:

[(1, 20491140), (2, 10245570), (3, 6830380), (4, 5122785), (5, 4098228), (6, 3415190), (10, 2049114), (12, 1707595), (15, 1366076), (20, 1024557), (30, 683038), (60, 341519), (523, 39180), (653, 31380), (1046, 19590), (1306, 15690), (1569, 13060), (1959, 10460), (2092, 9795), (2612, 7845), (2615, 7836), (3138, 6530), (3265, 6276), (3918, 5230)]