21068580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27011}}^1$

素因数の和:27036

約数の個数: 48

約数和(自身を含む): 63532224

約数和(自身を除く): 42463644

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, 27011, 54022, 81033, 108044, 135055, 162066, 270110, 324132, 351143, 405165, 540220, 702286, 810330, 1053429, 1404572, 1620660, 1755715, 2106858, 3511430, 4213716, 5267145, 7022860, 10534290, 21068580]

約数ペア:

[(1, 21068580), (2, 10534290), (3, 7022860), (4, 5267145), (5, 4213716), (6, 3511430), (10, 2106858), (12, 1755715), (13, 1620660), (15, 1404572), (20, 1053429), (26, 810330), (30, 702286), (39, 540220), (52, 405165), (60, 351143), (65, 324132), (78, 270110), (130, 162066), (156, 135055), (195, 108044), (260, 81033), (390, 54022), (780, 27011)]