19619275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 28685664

約数和(自身を除く): 9066389

約数列:

[1, 5, 13, 17, 25, 53, 65, 67, 85, 221, 265, 325, 335, 425, 689, 871, 901, 1105, 1139, 1325, 1675, 3445, 3551, 4355, 4505, 5525, 5695, 11713, 14807, 17225, 17755, 21775, 22525, 28475, 46163, 58565, 60367, 74035, 88775, 230815, 292825, 301835, 370175, 784771, 1154075, 1509175, 3923855, 19619275]

約数ペア:

[(1, 19619275), (5, 3923855), (13, 1509175), (17, 1154075), (25, 784771), (53, 370175), (65, 301835), (67, 292825), (85, 230815), (221, 88775), (265, 74035), (325, 60367), (335, 58565), (425, 46163), (689, 28475), (871, 22525), (901, 21775), (1105, 17755), (1139, 17225), (1325, 14807), (1675, 11713), (3445, 5695), (3551, 5525), (4355, 4505)]