20177095540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{478811}}^1$

素因数の和:478877

約数の個数: 72

約数和(自身を含む): 50436140832

約数和(自身を除く): 30259045292

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 490, 602, 860, 980, 1204, 1505, 2107, 3010, 4214, 6020, 8428, 10535, 21070, 42140, 478811, 957622, 1915244, 2394055, 3351677, 4788110, 6703354, 9576220, 13406708, 16758385, 20588873, 23461739, 33516770, 41177746, 46923478, 67033540, 82355492, 93846956, 102944365, 117308695, 144122111, 205888730, 234617390, 288244222, 411777460, 469234780, 576488444, 720610555, 1008854777, 1441221110, 2017709554, 2882442220, 4035419108, 5044273885, 10088547770, 20177095540]

約数ペア:

[(1, 20177095540), (2, 10088547770), (4, 5044273885), (5, 4035419108), (7, 2882442220), (10, 2017709554), (14, 1441221110), (20, 1008854777), (28, 720610555), (35, 576488444), (43, 469234780), (49, 411777460), (70, 288244222), (86, 234617390), (98, 205888730), (140, 144122111), (172, 117308695), (196, 102944365), (215, 93846956), (245, 82355492), (301, 67033540), (430, 46923478), (490, 41177746), (602, 33516770), (860, 23461739), (980, 20588873), (1204, 16758385), (1505, 13406708), (2107, 9576220), (3010, 6703354), (4214, 4788110), (6020, 3351677), (8428, 2394055), (10535, 1915244), (21070, 957622), (42140, 478811)]