19477900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{14983}}^1$

素因数の和:15010

約数の個数: 36

約数和(自身を含む): 45521392

約数和(自身を除く): 26043492

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 14983, 29966, 59932, 74915, 149830, 194779, 299660, 374575, 389558, 749150, 779116, 973895, 1498300, 1947790, 3895580, 4869475, 9738950, 19477900]

約数ペア:

[(1, 19477900), (2, 9738950), (4, 4869475), (5, 3895580), (10, 1947790), (13, 1498300), (20, 973895), (25, 779116), (26, 749150), (50, 389558), (52, 374575), (65, 299660), (100, 194779), (130, 149830), (260, 74915), (325, 59932), (650, 29966), (1300, 14983)]