81817554

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{21407}}^1$

素因数の和:21439

約数の個数: 48

約数和(自身を含む): 205003008

約数和(自身を除く): 123185454

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 546, 637, 1274, 1911, 3822, 21407, 42814, 64221, 128442, 149849, 278291, 299698, 449547, 556582, 834873, 899094, 1048943, 1669746, 1948037, 2097886, 3146829, 3896074, 5844111, 6293658, 11688222, 13636259, 27272518, 40908777, 81817554]

約数ペア:

[(1, 81817554), (2, 40908777), (3, 27272518), (6, 13636259), (7, 11688222), (13, 6293658), (14, 5844111), (21, 3896074), (26, 3146829), (39, 2097886), (42, 1948037), (49, 1669746), (78, 1048943), (91, 899094), (98, 834873), (147, 556582), (182, 449547), (273, 299698), (294, 278291), (546, 149849), (637, 128442), (1274, 64221), (1911, 42814), (3822, 21407)]