219290420

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1\times {\mathrm{491}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 467667648

約数和(自身を除く): 248377228

約数列:

[1, 2, 4, 5, 10, 20, 137, 163, 274, 326, 491, 548, 652, 685, 815, 982, 1370, 1630, 1964, 2455, 2740, 3260, 4910, 9820, 22331, 44662, 67267, 80033, 89324, 111655, 134534, 160066, 223310, 269068, 320132, 336335, 400165, 446620, 672670, 800330, 1345340, 1600660, 10964521, 21929042, 43858084, 54822605, 109645210, 219290420]

約数ペア:

[(1, 219290420), (2, 109645210), (4, 54822605), (5, 43858084), (10, 21929042), (20, 10964521), (137, 1600660), (163, 1345340), (274, 800330), (326, 672670), (491, 446620), (548, 400165), (652, 336335), (685, 320132), (815, 269068), (982, 223310), (1370, 160066), (1630, 134534), (1964, 111655), (2455, 89324), (2740, 80033), (3260, 67267), (4910, 44662), (9820, 22331)]