638265780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{853}}^1\times {\mathrm{4157}}^1$

素因数の和:5025

約数の個数: 72

約数和(自身を含む): 1938808872

約数和(自身を除く): 1300543092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 853, 1706, 2559, 3412, 4157, 4265, 5118, 7677, 8314, 8530, 10236, 12471, 12795, 15354, 16628, 17060, 20785, 24942, 25590, 30708, 37413, 38385, 41570, 49884, 51180, 62355, 74826, 76770, 83140, 124710, 149652, 153540, 187065, 249420, 374130, 748260, 3545921, 7091842, 10637763, 14183684, 17729605, 21275526, 31913289, 35459210, 42551052, 53188815, 63826578, 70918420, 106377630, 127653156, 159566445, 212755260, 319132890, 638265780]

約数ペア:

[(1, 638265780), (2, 319132890), (3, 212755260), (4, 159566445), (5, 127653156), (6, 106377630), (9, 70918420), (10, 63826578), (12, 53188815), (15, 42551052), (18, 35459210), (20, 31913289), (30, 21275526), (36, 17729605), (45, 14183684), (60, 10637763), (90, 7091842), (180, 3545921), (853, 748260), (1706, 374130), (2559, 249420), (3412, 187065), (4157, 153540), (4265, 149652), (5118, 124710), (7677, 83140), (8314, 76770), (8530, 74826), (10236, 62355), (12471, 51180), (12795, 49884), (15354, 41570), (16628, 38385), (17060, 37413), (20785, 30708), (24942, 25590)]