2909090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:338

約数の個数: 32

約数和(自身を含む): 5624640

約数和(自身を除く): 2715550

約数列:

[1, 2, 5, 10, 19, 38, 61, 95, 122, 190, 251, 305, 502, 610, 1159, 1255, 2318, 2510, 4769, 5795, 9538, 11590, 15311, 23845, 30622, 47690, 76555, 153110, 290909, 581818, 1454545, 2909090]

約数ペア:

[(1, 2909090), (2, 1454545), (5, 581818), (10, 290909), (19, 153110), (38, 76555), (61, 47690), (95, 30622), (122, 23845), (190, 15311), (251, 11590), (305, 9538), (502, 5795), (610, 4769), (1159, 2510), (1255, 2318)]