81775460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{769}}^1$

素因数の和:1200

約数の個数: 48

約数和(自身を含む): 185631600

約数和(自身を除く): 103856140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 409, 769, 818, 1538, 1636, 2045, 3076, 3845, 4090, 5317, 7690, 8180, 9997, 10634, 15380, 19994, 21268, 26585, 39988, 49985, 53170, 99970, 106340, 199940, 314521, 629042, 1258084, 1572605, 3145210, 4088773, 6290420, 8177546, 16355092, 20443865, 40887730, 81775460]

約数ペア:

[(1, 81775460), (2, 40887730), (4, 20443865), (5, 16355092), (10, 8177546), (13, 6290420), (20, 4088773), (26, 3145210), (52, 1572605), (65, 1258084), (130, 629042), (260, 314521), (409, 199940), (769, 106340), (818, 99970), (1538, 53170), (1636, 49985), (2045, 39988), (3076, 26585), (3845, 21268), (4090, 19994), (5317, 15380), (7690, 10634), (8180, 9997)]