19491680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9371}}^1$

素因数の和:9399

約数の個数: 48

約数和(自身を含む): 49596624

約数和(自身を除く): 30104944

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9371, 18742, 37484, 46855, 74968, 93710, 121823, 149936, 187420, 243646, 299872, 374840, 487292, 609115, 749680, 974584, 1218230, 1499360, 1949168, 2436460, 3898336, 4872920, 9745840, 19491680]

約数ペア:

[(1, 19491680), (2, 9745840), (4, 4872920), (5, 3898336), (8, 2436460), (10, 1949168), (13, 1499360), (16, 1218230), (20, 974584), (26, 749680), (32, 609115), (40, 487292), (52, 374840), (65, 299872), (80, 243646), (104, 187420), (130, 149936), (160, 121823), (208, 93710), (260, 74968), (416, 46855), (520, 37484), (1040, 18742), (2080, 9371)]