20428926

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 48660480

約数和(自身を除く): 28231554

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 47, 79, 94, 131, 141, 158, 237, 262, 282, 329, 393, 474, 553, 658, 786, 917, 987, 1106, 1659, 1834, 1974, 2751, 3318, 3713, 5502, 6157, 7426, 10349, 11139, 12314, 18471, 20698, 22278, 25991, 31047, 36942, 43099, 51982, 62094, 72443, 77973, 86198, 129297, 144886, 155946, 217329, 258594, 434658, 486403, 972806, 1459209, 2918418, 3404821, 6809642, 10214463, 20428926]

約数ペア:

[(1, 20428926), (2, 10214463), (3, 6809642), (6, 3404821), (7, 2918418), (14, 1459209), (21, 972806), (42, 486403), (47, 434658), (79, 258594), (94, 217329), (131, 155946), (141, 144886), (158, 129297), (237, 86198), (262, 77973), (282, 72443), (329, 62094), (393, 51982), (474, 43099), (553, 36942), (658, 31047), (786, 25991), (917, 22278), (987, 20698), (1106, 18471), (1659, 12314), (1834, 11139), (1974, 10349), (2751, 7426), (3318, 6157), (3713, 5502)]