164393960

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1\times {\mathrm{401}}^1$

素因数の和:726

約数の個数: 64

約数和(自身を含む): 382205520

約数和(自身を除く): 217811560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 277, 296, 370, 401, 554, 740, 802, 1108, 1385, 1480, 1604, 2005, 2216, 2770, 3208, 4010, 5540, 8020, 10249, 11080, 14837, 16040, 20498, 29674, 40996, 51245, 59348, 74185, 81992, 102490, 111077, 118696, 148370, 204980, 222154, 296740, 409960, 444308, 555385, 593480, 888616, 1110770, 2221540, 4109849, 4443080, 8219698, 16439396, 20549245, 32878792, 41098490, 82196980, 164393960]

約数ペア:

[(1, 164393960), (2, 82196980), (4, 41098490), (5, 32878792), (8, 20549245), (10, 16439396), (20, 8219698), (37, 4443080), (40, 4109849), (74, 2221540), (148, 1110770), (185, 888616), (277, 593480), (296, 555385), (370, 444308), (401, 409960), (554, 296740), (740, 222154), (802, 204980), (1108, 148370), (1385, 118696), (1480, 111077), (1604, 102490), (2005, 81992), (2216, 74185), (2770, 59348), (3208, 51245), (4010, 40996), (5540, 29674), (8020, 20498), (10249, 16040), (11080, 14837)]