168781180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{541}}^1\times {\mathrm{821}}^1$

素因数の和:1390

約数の個数: 48

約数和(自身を含む): 374240160

約数和(自身を除く): 205458980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 541, 821, 1082, 1642, 2164, 2705, 3284, 4105, 5410, 8210, 10279, 10820, 15599, 16420, 20558, 31198, 41116, 51395, 62396, 77995, 102790, 155990, 205580, 311980, 444161, 888322, 1776644, 2220805, 4441610, 8439059, 8883220, 16878118, 33756236, 42195295, 84390590, 168781180]

約数ペア:

[(1, 168781180), (2, 84390590), (4, 42195295), (5, 33756236), (10, 16878118), (19, 8883220), (20, 8439059), (38, 4441610), (76, 2220805), (95, 1776644), (190, 888322), (380, 444161), (541, 311980), (821, 205580), (1082, 155990), (1642, 102790), (2164, 77995), (2705, 62396), (3284, 51395), (4105, 41116), (5410, 31198), (8210, 20558), (10279, 16420), (10820, 15599)]