400010390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{887}}^1\times {\mathrm{3469}}^1$

素因数の和:4376

約数の個数: 32

約数和(自身を含む): 776502720

約数和(自身を除く): 376492330

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 887, 1774, 3469, 4435, 6938, 8870, 11531, 17345, 23062, 34690, 45097, 57655, 90194, 115310, 225485, 450970, 3077003, 6154006, 15385015, 30770030, 40001039, 80002078, 200005195, 400010390]

約数ペア:

[(1, 400010390), (2, 200005195), (5, 80002078), (10, 40001039), (13, 30770030), (26, 15385015), (65, 6154006), (130, 3077003), (887, 450970), (1774, 225485), (3469, 115310), (4435, 90194), (6938, 57655), (8870, 45097), (11531, 34690), (17345, 23062)]