20188285

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 27675648

約数和(自身を除く): 7487363

約数列:

[1, 5, 13, 31, 43, 65, 155, 215, 233, 403, 559, 1165, 1333, 2015, 2795, 3029, 6665, 7223, 10019, 15145, 17329, 36115, 50095, 86645, 93899, 130247, 310589, 469495, 651235, 1552945, 4037657, 20188285]

約数ペア:

[(1, 20188285), (5, 4037657), (13, 1552945), (31, 651235), (43, 469495), (65, 310589), (155, 130247), (215, 93899), (233, 86645), (403, 50095), (559, 36115), (1165, 17329), (1333, 15145), (2015, 10019), (2795, 7223), (3029, 6665)]