18219425

素因数分解:

$5^2\times 7^2\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:270

約数の個数: 36

約数和(自身を含む): 26717040

約数和(自身を除く): 8497615

約数列:

[1, 5, 7, 25, 35, 49, 107, 139, 175, 245, 535, 695, 749, 973, 1225, 2675, 3475, 3745, 4865, 5243, 6811, 14873, 18725, 24325, 26215, 34055, 74365, 104111, 131075, 170275, 371825, 520555, 728777, 2602775, 3643885, 18219425]

約数ペア:

[(1, 18219425), (5, 3643885), (7, 2602775), (25, 728777), (35, 520555), (49, 371825), (107, 170275), (139, 131075), (175, 104111), (245, 74365), (535, 34055), (695, 26215), (749, 24325), (973, 18725), (1225, 14873), (2675, 6811), (3475, 5243), (3745, 4865)]