205480730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{647}}^1$

素因数の和:1023

約数の個数: 64

約数和(自身を含む): 457228800

約数和(自身を除く): 251748070

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 349, 455, 647, 698, 910, 1294, 1745, 2443, 3235, 3490, 4529, 4537, 4886, 6470, 8411, 9058, 9074, 12215, 16822, 22645, 22685, 24430, 31759, 42055, 45290, 45370, 58877, 63518, 84110, 117754, 158795, 225803, 294385, 317590, 451606, 588770, 1129015, 1580621, 2258030, 2935439, 3161242, 5870878, 7903105, 14677195, 15806210, 20548073, 29354390, 41096146, 102740365, 205480730]

約数ペア:

[(1, 205480730), (2, 102740365), (5, 41096146), (7, 29354390), (10, 20548073), (13, 15806210), (14, 14677195), (26, 7903105), (35, 5870878), (65, 3161242), (70, 2935439), (91, 2258030), (130, 1580621), (182, 1129015), (349, 588770), (455, 451606), (647, 317590), (698, 294385), (910, 225803), (1294, 158795), (1745, 117754), (2443, 84110), (3235, 63518), (3490, 58877), (4529, 45370), (4537, 45290), (4886, 42055), (6470, 31759), (8411, 24430), (9058, 22685), (9074, 22645), (12215, 16822)]