819521360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20047}}^1$

素因数の和:20140

約数の個数: 80

約数和(自身を含む): 2207525376

約数和(自身を除く): 1388004016

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 73, 80, 112, 140, 146, 280, 292, 365, 511, 560, 584, 730, 1022, 1168, 1460, 2044, 2555, 2920, 4088, 5110, 5840, 8176, 10220, 20047, 20440, 40094, 40880, 80188, 100235, 140329, 160376, 200470, 280658, 320752, 400940, 561316, 701645, 801880, 1122632, 1403290, 1463431, 1603760, 2245264, 2806580, 2926862, 5613160, 5853724, 7317155, 10244017, 11226320, 11707448, 14634310, 20488034, 23414896, 29268620, 40976068, 51220085, 58537240, 81952136, 102440170, 117074480, 163904272, 204880340, 409760680, 819521360]

約数ペア:

[(1, 819521360), (2, 409760680), (4, 204880340), (5, 163904272), (7, 117074480), (8, 102440170), (10, 81952136), (14, 58537240), (16, 51220085), (20, 40976068), (28, 29268620), (35, 23414896), (40, 20488034), (56, 14634310), (70, 11707448), (73, 11226320), (80, 10244017), (112, 7317155), (140, 5853724), (146, 5613160), (280, 2926862), (292, 2806580), (365, 2245264), (511, 1603760), (560, 1463431), (584, 1403290), (730, 1122632), (1022, 801880), (1168, 701645), (1460, 561316), (2044, 400940), (2555, 320752), (2920, 280658), (4088, 200470), (5110, 160376), (5840, 140329), (8176, 100235), (10220, 80188), (20047, 40880), (20440, 40094)]