16638620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 36324288

約数和(自身を除く): 19685668

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 103, 164, 197, 205, 206, 394, 410, 412, 515, 788, 820, 985, 1030, 1970, 2060, 3940, 4223, 8077, 8446, 16154, 16892, 20291, 21115, 32308, 40385, 40582, 42230, 80770, 81164, 84460, 101455, 161540, 202910, 405820, 831931, 1663862, 3327724, 4159655, 8319310, 16638620]

約数ペア:

[(1, 16638620), (2, 8319310), (4, 4159655), (5, 3327724), (10, 1663862), (20, 831931), (41, 405820), (82, 202910), (103, 161540), (164, 101455), (197, 84460), (205, 81164), (206, 80770), (394, 42230), (410, 40582), (412, 40385), (515, 32308), (788, 21115), (820, 20291), (985, 16892), (1030, 16154), (1970, 8446), (2060, 8077), (3940, 4223)]