18780970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11113}}^1$

素因数の和:11146

約数の個数: 24

約数和(自身を含む): 36609516

約数和(自身を除く): 17828546

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 11113, 22226, 55565, 111130, 144469, 288938, 722345, 1444690, 1878097, 3756194, 9390485, 18780970]

約数ペア:

[(1, 18780970), (2, 9390485), (5, 3756194), (10, 1878097), (13, 1444690), (26, 722345), (65, 288938), (130, 144469), (169, 111130), (338, 55565), (845, 22226), (1690, 11113)]