19786260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25367}}^1$

素因数の和:25392

約数の個数: 48

約数和(自身を含む): 59665536

約数和(自身を除く): 39879276

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25367, 50734, 76101, 101468, 126835, 152202, 253670, 304404, 329771, 380505, 507340, 659542, 761010, 989313, 1319084, 1522020, 1648855, 1978626, 3297710, 3957252, 4946565, 6595420, 9893130, 19786260]

約数ペア:

[(1, 19786260), (2, 9893130), (3, 6595420), (4, 4946565), (5, 3957252), (6, 3297710), (10, 1978626), (12, 1648855), (13, 1522020), (15, 1319084), (20, 989313), (26, 761010), (30, 659542), (39, 507340), (52, 380505), (60, 329771), (65, 304404), (78, 253670), (130, 152202), (156, 126835), (195, 101468), (260, 76101), (390, 50734), (780, 25367)]