19881315

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:393

約数の個数: 64

約数和(自身を含む): 38937600

約数和(自身を除く): 19056285

約数列:

[1, 3, 5, 9, 15, 19, 23, 27, 45, 57, 69, 95, 115, 135, 171, 207, 285, 337, 345, 437, 513, 621, 855, 1011, 1035, 1311, 1685, 2185, 2565, 3033, 3105, 3933, 5055, 6403, 6555, 7751, 9099, 11799, 15165, 19209, 19665, 23253, 32015, 38755, 45495, 57627, 58995, 69759, 96045, 116265, 147269, 172881, 209277, 288135, 348795, 441807, 736345, 864405, 1046385, 1325421, 2209035, 3976263, 6627105, 19881315]

約数ペア:

[(1, 19881315), (3, 6627105), (5, 3976263), (9, 2209035), (15, 1325421), (19, 1046385), (23, 864405), (27, 736345), (45, 441807), (57, 348795), (69, 288135), (95, 209277), (115, 172881), (135, 147269), (171, 116265), (207, 96045), (285, 69759), (337, 58995), (345, 57627), (437, 45495), (513, 38755), (621, 32015), (855, 23253), (1011, 19665), (1035, 19209), (1311, 15165), (1685, 11799), (2185, 9099), (2565, 7751), (3033, 6555), (3105, 6403), (3933, 5055)]