21084414

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 28025346

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 41, 57, 78, 82, 114, 123, 246, 247, 347, 494, 533, 694, 741, 779, 1041, 1066, 1482, 1558, 1599, 2082, 2337, 3198, 4511, 4674, 6593, 9022, 10127, 13186, 13533, 14227, 19779, 20254, 27066, 28454, 30381, 39558, 42681, 60762, 85362, 85709, 171418, 184951, 257127, 270313, 369902, 514254, 540626, 554853, 810939, 1109706, 1621878, 3514069, 7028138, 10542207, 21084414]

約数ペア:

[(1, 21084414), (2, 10542207), (3, 7028138), (6, 3514069), (13, 1621878), (19, 1109706), (26, 810939), (38, 554853), (39, 540626), (41, 514254), (57, 369902), (78, 270313), (82, 257127), (114, 184951), (123, 171418), (246, 85709), (247, 85362), (347, 60762), (494, 42681), (533, 39558), (694, 30381), (741, 28454), (779, 27066), (1041, 20254), (1066, 19779), (1482, 14227), (1558, 13533), (1599, 13186), (2082, 10127), (2337, 9022), (3198, 6593), (4511, 4674)]