21863961

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 38338560

約数和(自身を除く): 16474599

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 79, 161, 191, 207, 237, 483, 553, 573, 711, 1337, 1449, 1659, 1719, 1817, 4011, 4393, 4977, 5451, 12033, 12719, 13179, 15089, 16353, 30751, 38157, 39537, 45267, 92253, 105623, 114471, 135801, 276759, 316869, 347047, 950607, 1041141, 2429329, 3123423, 7287987, 21863961]

約数ペア:

[(1, 21863961), (3, 7287987), (7, 3123423), (9, 2429329), (21, 1041141), (23, 950607), (63, 347047), (69, 316869), (79, 276759), (161, 135801), (191, 114471), (207, 105623), (237, 92253), (483, 45267), (553, 39537), (573, 38157), (711, 30751), (1337, 16353), (1449, 15089), (1659, 13179), (1719, 12719), (1817, 12033), (4011, 5451), (4393, 4977)]