19933375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 32947200

約数和(自身を除く): 13013825

約数列:

[1, 5, 7, 11, 19, 25, 35, 55, 77, 95, 109, 125, 133, 175, 209, 275, 385, 475, 545, 665, 763, 875, 1045, 1199, 1375, 1463, 1925, 2071, 2375, 2725, 3325, 3815, 5225, 5995, 7315, 8393, 9625, 10355, 13625, 14497, 16625, 19075, 22781, 26125, 29975, 36575, 41965, 51775, 72485, 95375, 113905, 149875, 159467, 182875, 209825, 258875, 362425, 569525, 797335, 1049125, 1812125, 2847625, 3986675, 19933375]

約数ペア:

[(1, 19933375), (5, 3986675), (7, 2847625), (11, 1812125), (19, 1049125), (25, 797335), (35, 569525), (55, 362425), (77, 258875), (95, 209825), (109, 182875), (125, 159467), (133, 149875), (175, 113905), (209, 95375), (275, 72485), (385, 51775), (475, 41965), (545, 36575), (665, 29975), (763, 26125), (875, 22781), (1045, 19075), (1199, 16625), (1375, 14497), (1463, 13625), (1925, 10355), (2071, 9625), (2375, 8393), (2725, 7315), (3325, 5995), (3815, 5225)]