21520038

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{349}}^1$

素因数の和:636

約数の個数: 32

約数和(自身を含む): 44352000

約数和(自身を除く): 22831962

約数列:

[1, 2, 3, 6, 43, 86, 129, 239, 258, 349, 478, 698, 717, 1047, 1434, 2094, 10277, 15007, 20554, 30014, 30831, 45021, 61662, 83411, 90042, 166822, 250233, 500466, 3586673, 7173346, 10760019, 21520038]

約数ペア:

[(1, 21520038), (2, 10760019), (3, 7173346), (6, 3586673), (43, 500466), (86, 250233), (129, 166822), (239, 90042), (258, 83411), (349, 61662), (478, 45021), (698, 30831), (717, 30014), (1047, 20554), (1434, 15007), (2094, 10277)]