18949580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72883}}^1$

素因数の和:72905

約数の個数: 24

約数和(自身を含む): 42855792

約数和(自身を除く): 23906212

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72883, 145766, 291532, 364415, 728830, 947479, 1457660, 1894958, 3789916, 4737395, 9474790, 18949580]

約数ペア:

[(1, 18949580), (2, 9474790), (4, 4737395), (5, 3789916), (10, 1894958), (13, 1457660), (20, 947479), (26, 728830), (52, 364415), (65, 291532), (130, 145766), (260, 72883)]