165067640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:704

約数の個数: 64

約数和(自身を含む): 382929120

約数和(自身を除く): 217861480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 251, 328, 401, 410, 502, 802, 820, 1004, 1255, 1604, 1640, 2005, 2008, 2510, 3208, 4010, 5020, 8020, 10040, 10291, 16040, 16441, 20582, 32882, 41164, 51455, 65764, 82205, 82328, 100651, 102910, 131528, 164410, 201302, 205820, 328820, 402604, 411640, 503255, 657640, 805208, 1006510, 2013020, 4026040, 4126691, 8253382, 16506764, 20633455, 33013528, 41266910, 82533820, 165067640]

約数ペア:

[(1, 165067640), (2, 82533820), (4, 41266910), (5, 33013528), (8, 20633455), (10, 16506764), (20, 8253382), (40, 4126691), (41, 4026040), (82, 2013020), (164, 1006510), (205, 805208), (251, 657640), (328, 503255), (401, 411640), (410, 402604), (502, 328820), (802, 205820), (820, 201302), (1004, 164410), (1255, 131528), (1604, 102910), (1640, 100651), (2005, 82328), (2008, 82205), (2510, 65764), (3208, 51455), (4010, 41164), (5020, 32882), (8020, 20582), (10040, 16441), (10291, 16040)]