18439690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 37319040

約数和(自身を除く): 18879350

約数列:

[1, 2, 5, 10, 19, 37, 38, 43, 61, 74, 86, 95, 122, 185, 190, 215, 305, 370, 430, 610, 703, 817, 1159, 1406, 1591, 1634, 2257, 2318, 2623, 3182, 3515, 4085, 4514, 5246, 5795, 7030, 7955, 8170, 11285, 11590, 13115, 15910, 22570, 26230, 30229, 42883, 49837, 60458, 85766, 97051, 99674, 151145, 194102, 214415, 249185, 302290, 428830, 485255, 498370, 970510, 1843969, 3687938, 9219845, 18439690]

約数ペア:

[(1, 18439690), (2, 9219845), (5, 3687938), (10, 1843969), (19, 970510), (37, 498370), (38, 485255), (43, 428830), (61, 302290), (74, 249185), (86, 214415), (95, 194102), (122, 151145), (185, 99674), (190, 97051), (215, 85766), (305, 60458), (370, 49837), (430, 42883), (610, 30229), (703, 26230), (817, 22570), (1159, 15910), (1406, 13115), (1591, 11590), (1634, 11285), (2257, 8170), (2318, 7955), (2623, 7030), (3182, 5795), (3515, 5246), (4085, 4514)]