42784520

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{2053}}^1$

素因数の和:2585

約数の個数: 32

約数和(自身を含む): 96496920

約数和(自身を除く): 53712400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2053, 2084, 2605, 4106, 4168, 5210, 8212, 10265, 10420, 16424, 20530, 20840, 41060, 82120, 1069613, 2139226, 4278452, 5348065, 8556904, 10696130, 21392260, 42784520]

約数ペア:

[(1, 42784520), (2, 21392260), (4, 10696130), (5, 8556904), (8, 5348065), (10, 4278452), (20, 2139226), (40, 1069613), (521, 82120), (1042, 41060), (2053, 20840), (2084, 20530), (2605, 16424), (4106, 10420), (4168, 10265), (5210, 8212)]