20161896825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1\times {\mathrm{739}}^1$

素因数の和:1247

約数の個数: 96

約数和(自身を含む): 38506900480

約数和(自身を除く): 18345003655

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 157, 175, 331, 471, 525, 739, 785, 993, 1099, 1655, 2217, 2317, 2355, 3297, 3695, 3925, 4965, 5173, 5495, 6951, 8275, 11085, 11585, 11775, 15519, 16485, 18475, 24825, 25865, 27475, 34755, 51967, 55425, 57925, 77595, 82425, 116023, 129325, 155901, 173775, 244609, 259835, 348069, 363769, 387975, 580115, 733827, 779505, 812161, 1091307, 1223045, 1299175, 1712263, 1740345, 1818845, 2436483, 2900575, 3669135, 3897525, 4060805, 5136789, 5456535, 6115225, 8561315, 8701725, 9094225, 12182415, 18345675, 20304025, 25683945, 27282675, 38403613, 42806575, 60912075, 115210839, 128419725, 192018065, 268825291, 576054195, 806475873, 960090325, 1344126455, 2880270975, 4032379365, 6720632275, 20161896825]

約数ペア:

[(1, 20161896825), (3, 6720632275), (5, 4032379365), (7, 2880270975), (15, 1344126455), (21, 960090325), (25, 806475873), (35, 576054195), (75, 268825291), (105, 192018065), (157, 128419725), (175, 115210839), (331, 60912075), (471, 42806575), (525, 38403613), (739, 27282675), (785, 25683945), (993, 20304025), (1099, 18345675), (1655, 12182415), (2217, 9094225), (2317, 8701725), (2355, 8561315), (3297, 6115225), (3695, 5456535), (3925, 5136789), (4965, 4060805), (5173, 3897525), (5495, 3669135), (6951, 2900575), (8275, 2436483), (11085, 1818845), (11585, 1740345), (11775, 1712263), (15519, 1299175), (16485, 1223045), (18475, 1091307), (24825, 812161), (25865, 779505), (27475, 733827), (34755, 580115), (51967, 387975), (55425, 363769), (57925, 348069), (77595, 259835), (82425, 244609), (116023, 173775), (129325, 155901)]