21320628

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{4789}}^1$

素因数の和:4856

約数の個数: 48

約数和(自身を含む): 57939840

約数和(自身を除く): 36619212

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 53, 84, 106, 159, 212, 318, 371, 636, 742, 1113, 1484, 2226, 4452, 4789, 9578, 14367, 19156, 28734, 33523, 57468, 67046, 100569, 134092, 201138, 253817, 402276, 507634, 761451, 1015268, 1522902, 1776719, 3045804, 3553438, 5330157, 7106876, 10660314, 21320628]

約数ペア:

[(1, 21320628), (2, 10660314), (3, 7106876), (4, 5330157), (6, 3553438), (7, 3045804), (12, 1776719), (14, 1522902), (21, 1015268), (28, 761451), (42, 507634), (53, 402276), (84, 253817), (106, 201138), (159, 134092), (212, 100569), (318, 67046), (371, 57468), (636, 33523), (742, 28734), (1113, 19156), (1484, 14367), (2226, 9578), (4452, 4789)]