19771725

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 34283520

約数和(自身を除く): 14511795

約数列:

[1, 3, 5, 15, 25, 47, 71, 75, 79, 141, 213, 235, 237, 355, 395, 705, 1065, 1175, 1185, 1775, 1975, 3337, 3525, 3713, 5325, 5609, 5925, 10011, 11139, 16685, 16827, 18565, 28045, 50055, 55695, 83425, 84135, 92825, 140225, 250275, 263623, 278475, 420675, 790869, 1318115, 3954345, 6590575, 19771725]

約数ペア:

[(1, 19771725), (3, 6590575), (5, 3954345), (15, 1318115), (25, 790869), (47, 420675), (71, 278475), (75, 263623), (79, 250275), (141, 140225), (213, 92825), (235, 84135), (237, 83425), (355, 55695), (395, 50055), (705, 28045), (1065, 18565), (1175, 16827), (1185, 16685), (1775, 11139), (1975, 10011), (3337, 5925), (3525, 5609), (3713, 5325)]