19407420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{787}}^1$

素因数の和:939

約数の個数: 72

約数和(自身を含む): 59374224

約数和(自身を除く): 39966804

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 137, 180, 274, 411, 548, 685, 787, 822, 1233, 1370, 1574, 1644, 2055, 2361, 2466, 2740, 3148, 3935, 4110, 4722, 4932, 6165, 7083, 7870, 8220, 9444, 11805, 12330, 14166, 15740, 23610, 24660, 28332, 35415, 47220, 70830, 107819, 141660, 215638, 323457, 431276, 539095, 646914, 970371, 1078190, 1293828, 1617285, 1940742, 2156380, 3234570, 3881484, 4851855, 6469140, 9703710, 19407420]

約数ペア:

[(1, 19407420), (2, 9703710), (3, 6469140), (4, 4851855), (5, 3881484), (6, 3234570), (9, 2156380), (10, 1940742), (12, 1617285), (15, 1293828), (18, 1078190), (20, 970371), (30, 646914), (36, 539095), (45, 431276), (60, 323457), (90, 215638), (137, 141660), (180, 107819), (274, 70830), (411, 47220), (548, 35415), (685, 28332), (787, 24660), (822, 23610), (1233, 15740), (1370, 14166), (1574, 12330), (1644, 11805), (2055, 9444), (2361, 8220), (2466, 7870), (2740, 7083), (3148, 6165), (3935, 4932), (4110, 4722)]