19638216

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{20981}}^1$

素因数の和:21006

約数の個数: 48

約数和(自身を含む): 57280860

約数和(自身を除く): 37642644

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 20981, 41962, 62943, 83924, 125886, 167848, 188829, 251772, 272753, 377658, 503544, 545506, 755316, 818259, 1091012, 1510632, 1636518, 2182024, 2454777, 3273036, 4909554, 6546072, 9819108, 19638216]

約数ペア:

[(1, 19638216), (2, 9819108), (3, 6546072), (4, 4909554), (6, 3273036), (8, 2454777), (9, 2182024), (12, 1636518), (13, 1510632), (18, 1091012), (24, 818259), (26, 755316), (36, 545506), (39, 503544), (52, 377658), (72, 272753), (78, 251772), (104, 188829), (117, 167848), (156, 125886), (234, 83924), (312, 62943), (468, 41962), (936, 20981)]