20744892

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{431}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 60383232

約数和(自身を除く): 39638340

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 191, 252, 382, 431, 573, 764, 862, 1146, 1293, 1337, 1719, 1724, 2292, 2586, 2674, 3017, 3438, 3879, 4011, 5172, 5348, 6034, 6876, 7758, 8022, 9051, 12033, 12068, 15516, 16044, 18102, 24066, 27153, 36204, 48132, 54306, 82321, 108612, 164642, 246963, 329284, 493926, 576247, 740889, 987852, 1152494, 1481778, 1728741, 2304988, 2963556, 3457482, 5186223, 6914964, 10372446, 20744892]

約数ペア:

[(1, 20744892), (2, 10372446), (3, 6914964), (4, 5186223), (6, 3457482), (7, 2963556), (9, 2304988), (12, 1728741), (14, 1481778), (18, 1152494), (21, 987852), (28, 740889), (36, 576247), (42, 493926), (63, 329284), (84, 246963), (126, 164642), (191, 108612), (252, 82321), (382, 54306), (431, 48132), (573, 36204), (764, 27153), (862, 24066), (1146, 18102), (1293, 16044), (1337, 15516), (1719, 12068), (1724, 12033), (2292, 9051), (2586, 8022), (2674, 7758), (3017, 6876), (3438, 6034), (3879, 5348), (4011, 5172)]