279460

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 597240

約数和(自身を除く): 317780

約数列:

[1, 2, 4, 5, 10, 20, 89, 157, 178, 314, 356, 445, 628, 785, 890, 1570, 1780, 3140, 13973, 27946, 55892, 69865, 139730, 279460]

約数ペア:

[(1, 279460), (2, 139730), (4, 69865), (5, 55892), (10, 27946), (20, 13973), (89, 3140), (157, 1780), (178, 1570), (314, 890), (356, 785), (445, 628)]