20389980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26141}}^1$

素因数の和:26166

約数の個数: 48

約数和(自身を含む): 61485984

約数和(自身を除く): 41096004

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, 26141, 52282, 78423, 104564, 130705, 156846, 261410, 313692, 339833, 392115, 522820, 679666, 784230, 1019499, 1359332, 1568460, 1699165, 2038998, 3398330, 4077996, 5097495, 6796660, 10194990, 20389980]

約数ペア:

[(1, 20389980), (2, 10194990), (3, 6796660), (4, 5097495), (5, 4077996), (6, 3398330), (10, 2038998), (12, 1699165), (13, 1568460), (15, 1359332), (20, 1019499), (26, 784230), (30, 679666), (39, 522820), (52, 392115), (60, 339833), (65, 313692), (78, 261410), (130, 156846), (156, 130705), (195, 104564), (260, 78423), (390, 52282), (780, 26141)]