19916925

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{643}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 38330880

約数和(自身を除く): 18413955

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 59, 75, 105, 175, 177, 295, 413, 525, 643, 885, 1239, 1475, 1929, 2065, 3215, 4425, 4501, 6195, 9645, 10325, 13503, 16075, 22505, 30975, 37937, 48225, 67515, 112525, 113811, 189685, 265559, 337575, 569055, 796677, 948425, 1327795, 2845275, 3983385, 6638975, 19916925]

約数ペア:

[(1, 19916925), (3, 6638975), (5, 3983385), (7, 2845275), (15, 1327795), (21, 948425), (25, 796677), (35, 569055), (59, 337575), (75, 265559), (105, 189685), (175, 113811), (177, 112525), (295, 67515), (413, 48225), (525, 37937), (643, 30975), (885, 22505), (1239, 16075), (1475, 13503), (1929, 10325), (2065, 9645), (3215, 6195), (4425, 4501)]