21369400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8219}}^1$

素因数の和:8248

約数の個数: 48

約数和(自身を含む): 53512200

約数和(自身を除く): 32142800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8219, 16438, 32876, 41095, 65752, 82190, 106847, 164380, 205475, 213694, 328760, 410950, 427388, 534235, 821900, 854776, 1068470, 1643800, 2136940, 2671175, 4273880, 5342350, 10684700, 21369400]

約数ペア:

[(1, 21369400), (2, 10684700), (4, 5342350), (5, 4273880), (8, 2671175), (10, 2136940), (13, 1643800), (20, 1068470), (25, 854776), (26, 821900), (40, 534235), (50, 427388), (52, 410950), (65, 328760), (100, 213694), (104, 205475), (130, 164380), (200, 106847), (260, 82190), (325, 65752), (520, 41095), (650, 32876), (1300, 16438), (2600, 8219)]