19611020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6857}}^1$

素因数の和:6890

約数の個数: 48

約数和(自身を含む): 48390048

約数和(自身を除く): 28779028

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 6857, 13714, 27428, 34285, 68570, 75427, 89141, 137140, 150854, 178282, 301708, 356564, 377135, 445705, 754270, 891410, 980551, 1508540, 1782820, 1961102, 3922204, 4902755, 9805510, 19611020]

約数ペア:

[(1, 19611020), (2, 9805510), (4, 4902755), (5, 3922204), (10, 1961102), (11, 1782820), (13, 1508540), (20, 980551), (22, 891410), (26, 754270), (44, 445705), (52, 377135), (55, 356564), (65, 301708), (110, 178282), (130, 150854), (143, 137140), (220, 89141), (260, 75427), (286, 68570), (572, 34285), (715, 27428), (1430, 13714), (2860, 6857)]