128737140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306517}}^1$

素因数の和:306536

約数の個数: 48

約数和(自身を含む): 411960192

約数和(自身を除く): 283223052

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 306517, 613034, 919551, 1226068, 1532585, 1839102, 2145619, 3065170, 3678204, 4291238, 4597755, 6130340, 6436857, 8582476, 9195510, 10728095, 12873714, 18391020, 21456190, 25747428, 32184285, 42912380, 64368570, 128737140]

約数ペア:

[(1, 128737140), (2, 64368570), (3, 42912380), (4, 32184285), (5, 25747428), (6, 21456190), (7, 18391020), (10, 12873714), (12, 10728095), (14, 9195510), (15, 8582476), (20, 6436857), (21, 6130340), (28, 4597755), (30, 4291238), (35, 3678204), (42, 3065170), (60, 2145619), (70, 1839102), (84, 1532585), (105, 1226068), (140, 919551), (210, 613034), (420, 306517)]