78338690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^2$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 152273088

約数和(自身を除く): 73934398

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 89, 115, 178, 215, 230, 430, 445, 890, 989, 1978, 2047, 3827, 4094, 4945, 7654, 7921, 9890, 10235, 15842, 19135, 20470, 38270, 39605, 79210, 88021, 176042, 182183, 340603, 364366, 440105, 681206, 880210, 910915, 1703015, 1821830, 3406030, 7833869, 15667738, 39169345, 78338690]

約数ペア:

[(1, 78338690), (2, 39169345), (5, 15667738), (10, 7833869), (23, 3406030), (43, 1821830), (46, 1703015), (86, 910915), (89, 880210), (115, 681206), (178, 440105), (215, 364366), (230, 340603), (430, 182183), (445, 176042), (890, 88021), (989, 79210), (1978, 39605), (2047, 38270), (3827, 20470), (4094, 19135), (4945, 15842), (7654, 10235), (7921, 9890)]